Those processes are server processes and they are supposed to always run in the background. In that way they are ready to be accessed by client software immediately. For why they are root: often but not always servers need elevated privileges, e.g. to open ports below 1024 or read restricted files.

Ah it seems they released the android app very recently and it is not FOSS.

I think I will try a combination if dawarich and FMD. Any reason other apps like colota are preferred to the dawarich app on the device?

This could work, I’ll check it out

That sounds great. Will check it out.