Recommendations for long term dca stocks or etfs

For context: 35 year old that’s messed up with the likes of gme and other meme stocks and lost a good amount of $. Now I’m looking to just invest monthly into stable and diversified etf or mutual funds.

I also plan to contribute the 6k into a Roth IRA.

Currently I have random amounts in VTI, VOO and ICLN in my Roth, primarily buying VTI.

In my taxable I have more ICLN, BABA, BB, AAPL, VXUS, IWM, SQ and a bunch of ARK funds.

I was looking into maybe start investing primarily into FXIAX in my taxable and then going forward only putting money into FXIAX in my taxable and VTI in my my Roth.

Recommendations appreciated thanks!