VXUS
Vanguard Total International Stock ETF
stock NASDAQ ETF

Only commenting because I happened to be working through VT vs VTI/VXUS debate in my head too. I decided to go VT. I have my own reasons but I want to have a low MAGI and having to rebalance 1m+ portfolio sounds tricky as the dividends will eat up so much of my room. I don't want to be thinking about this kindda stuff over and over every year. Plus higher MAGI will eat the fee savings. The main issue is if you want something significantly different from 60/40.
In the Roth though, I stash all the VXUS. Even the ordinary dividends get sheltered from tax. It turns the most annoying, high dividend paying thing into the exact opposite. I also hope in coming decade(s) Vanguard will slightly lower the expense ratio on VT again, and I think it might be in the cards. (IDK)

I have 80% VTI & 20% VXUS, would switching 100% VT earn me more over the course of 20 years?

Hey, I was in a somewhat similar situation as you a couple years ago, I’m 24 now. I started out investing into VTI & VXUS managing the percentage splits myself with automated investing.
But as others have recommended you doing, I am now sending my automated investing into VT, it’s just a lot simpler and no need for rebalancing. No bonds at our age, we can risk it for the biscuit.
As for what percentage of your paycheck you should invest, this totally depends on your financial/lifestyle situation. But IMO ensure you have enough for your needs (rent, food, bills, etc), ensure you have some rainy day money in a HYSA (that amount could vary, but whatever you feel comfortable with), and then the rest into VT.

Or just AOA to get effectively 48% VTI, 32% VXUS, and 20% BND all in one ETF

70% VTI / 15% VXUS / 15% VGT or SMH

70% VTI / 20% VXUS / 10% SMH or VGT

Everyone should have the market beta. Either the total US market (VTI) or s&p 500 (VOO) + diversified ex-us (VXUS, though I'm also a fan of AVDV), or total world market (VT)  
You're without a market beta here. If you have it in your 401k, then disregard, but everyone should have it. And an SP500 momentum fund doesn't count. 
You should dump that MSTR holding. Even if you do like bitcoin (which, you probably shouldn't), just own it through a bitcoin ETF or directly. There's no point in holding MSTR, and that ship looks ripe for sinking. 

Need more information like your background and pre-financial portfolio. But generally speaking I would first eliminate all high interest loans you have. Then (depending on again your background or risk tolerance), I would put 100k in HYSA, 400k in 80%VTI/20%VXUS, and 100k for you to do whatever (live in the now or save or invest). I don’t think you need a wealth manager eating away at any of this.

50% VTI
35% VXUS
15% BND

VOO sits at $995 billion in aum today,five billion from a milestone no etf has ever hit, it will most prob cross $1 trillion probably this month, get a wave of coverage and most of that coverage will frame it as a feel good passive investing win.
so what happens after? when a single fund holds $1T in the same 500 companies, it means every dollar flowing into the most popular investment vehicle on earth automatically buys more of whatever is already biggest. Nvidia goes up, its index weight increases and VOO buys more nvidia which pushes Nvidia up further. The feedback loop is structural and its been running for years
This isnt an argument against index investing tho, less than 5% of active large blend funds have outperformed their passive peers over 15 years as per morningstar's latest active/passive barometer. The math on passive still wins but passive at $1 trillion concentration in 500 US companies is a different risk profile than passive was in 2010 when the same thingy was being made about a $50B fund.
SCHD pulled in $10.59B in inflows and VTI pulled in $27.27B. VXUS and IEMG which are international diversifiers saw a combined $26B+ in new assets. SGOV(the 0-3 month )treasury etf pulled in $25B. Money is still flowing into passive but its spreading across more vehicles,not into VOO specifically
For EU investors this dynamic is slightly different , VOO itself isnt directly available on most European platforms but VUSA and VUAG track the identical index and ig bitpanda has both available ,traderepublic too so the access question is solved and the concentration question is the one worth actually thinking about heading into H2.
Is anyone actively diversifying away from pure S&P 500 exposure or riding the $1 trillion wave?

It’s up to you to determine your investment philosophy and risk tolerance. 20% doesn’t seem crazy to me in and of itself, but you are still heavily concentrated in the S&P500 and US, so there’s a lot of overlapping bets here. Will you be able to sleep at night, and how will you feel if there’s a major drawdown or the S&P underperforms other markets for years? I personally would want more diversified international exposure, whether its VXUS, AVNM, or IDMO.

These are my thoughts as well. They must be spending more than he acknowledges.
And definitely move to buying VTI/VXUS or VT.

VOO VXUS

Nobody knows how long the party will last; that’s why you diversify at a global market weight in VTI/VXUS or VT.

70% VTI / 15% VXUS / 15% SMH

I balance my factor bets with core holdings. 30% VOO balanced 15% SPMO and 15% AVUV. 15% VXUS balanced with 15% AVDV.

Doesn't really matter. You just have to decide whether you want an "all-in-one" like VT or if you would rather pick your own US-to-international ratio like with VTI/VXUS.
As for Fidelity Zero funds, I would only use those in an account where there are no tax implications if you sell (e.g. Roth, Traditional IRA, etc.). Since they aren't portable to other custodians, you don't want to be in a situation where you have to trigger taxable gains should you choose to leave Fidelity in the future.
That said, I would personally just go with the ETFs that are portable - whether that is Vanguard, iShares, State Street doesn't really matter since they basically all have versions of the same thing and they're all roughly similar cost - over the Fidelity Zero funds because the cost difference is immaterial and the performance (so far) is basically the same as VTI/ITOT/etc.
VT is the most expensive of the ones you listed at 0.06% (6 basis points). That costs you $6 per year per $10,000 invested. That higher cost is not making a difference even over a 40+ year investing timeline compared to the zero funds. So, if it was me, I'd go with the easily portable ETFs.

I have my Roth IRA in a 80 / 20 VTI VXUS split. Maxed for this year beginning in my taxable brokerage now. Looking to go heavier growth / more risk focused. Currently heavy in DRAM and a few incidental stocks. Looking to lean out of DRAM (20-30%) and trying to figure out what ETF(s) to get for growth (10-15 year outlook). Maybe overthinking it and VT is the best, but also looking at SPMO and FTFM. Advice?

People often say VTI/VXUS in a taxable account for the tax credit but when I looked into the math it was on the order of magnitude of saving $10 per year for every $10,000 invested compared to VT. Or in other words if your brokerage grew to 1,000,000 you would save 1,000 annually. 
To each their own but that is a rounding error to me. You're telling me I can just VT and never think about it or rebalance again for that cost? Yeah thats worth it to me.

That’s why I buy VT instead of guessing on a VTI/VXUS split