New investor, maxed Roth IRA, HSA and 401k, looking to now put extra into vanguard brokerage account- help!

Late 20s, have already maxed tax advantage accounts. Looking to start with investing \~5000 initially and then 2,000 per month from there into simple moderately aggressive plan. Looking for advice between ETFs and mutual funds, planning on putting majority into total stock market and then some into international markets. Open to advice! Thank you in advance