LVHI
Franklin International Low Volatility High Dividend Index ETF
stock BATS ETF

These kinds of questions seem silly to me. As you can buy multiple ETFs, and in combination it can be a better or more diversified portfolio.
But, if it was a law that you were only allowed to buy one ETF, I'd suggest VT. But since that's nonsense, I'd suggest (if in a tax-advantage account) a combination of DGRO, SCHD, SCHG, SPMO, AVUV, LVHI & AVNM. If in a taxable account, VOO, SPMO, AVUV, AVNM.

I'd so 20% LVHI, VYMI, IDMO and/or AVNM long before VXUS.
I'd also do 10% AVUV and lower SPMO to 20%.

I use SCHD, DGRO, LVHI & VYMI in my tax-advantage accounts and VOO, SPMO, SCHG, AVUV, AVNM, IDMO in my taxable accounts

The problem is that you're investing in MM. BINC, VCIT, USHY, FAAA, PAAA are some suggestions. But also you need equities like SCHD, DGRO, LVHI, VYMI which will pay dividends and have growth. Then, you simply sell a small piece of the growth funds to rebalance. You only need/want about 5% in short-term gov bonds like SGOV or STIP. No reason at all for MM except for temp sweep.
You should be able to get about a 3% dividend yield average with this portfolio, so only maybe 1% growth sale per year, well below the long-term growth average including inflation.
57 and retired since 2005. I've been selling growth capital for living expenses for 21 years. And my portfolio balance is up 4x since 2005, even including selling a small amout of the growth each year.

I allocate 45% LVHI for international "blue chips," 45% for emerging market dividends, and 10% IXC for the energy moolah -- three funds with not much correlation other than they all contain large cap dividend payers

SCHD, AUSF, LVHI, USMV, VTV

LVHI

My 401k: LVHI (45%), DEM (45%), IXC (10%)