As a few in here, i got my current job over teams and have had a few other interviews like that too.
I think with being at home a lot of people are more relaxed, and it would depend on the job. One interview i had was for a professional training role and so i wore a white shirt with no tie. I then try and make a note of what the other people are wearing and align my second interview outfit accordingly.
The job i actually got i wasn't really bothered about initially. I think i had a quarter zip running top on
I noticed most people are quite relaxed though as they're just wearing what they'd normally wear for working at home.
As above though, do a dummy run, make sure your software is working ahead of time and clear any clutter from behind you. Also try and make sure lighting is decent. No-one needs a bright light over your shoulder or sun blazing through the window!