Where to Invest Company Roth IRA (401k) When I already invest in SP500 and Total US Market?

I just received a 401k through my company and they match. I’ve been maxing out my Roth in a person account through the Total Stock Market (VTI). I have also been investing in the SP500 every week.

Since I have been investing in these at 30, is there something else I should invest in or add to one of these?