Like I said, this was a suggestion, and is what works for me. (And based on the way my mind has been working for 30 years trying to locate songs in a hurry) I was a club DJ back in the day, so, that might explain a few things!
Mostly, when artists from bands do a solo project, that would stay under their name... Phil Collins, Peter Gabriels, etc. There's the odd song where requests had been made for Layla by Clapton, and after a few hundred times hearing it, you just associate Layla with Clapton.
Here's the thing though. I still spin as a hobby, and have moved my music to my HDD. The software I use to play doesn't use or display ALBUMARTIST, just ARTIST. I can have ALBUMARTIST Lastname, First for sorting and organization on the HDD, but display ARTIST as Firstname Lastname in my software.
I think it comes from my days of vinyl, when we'd sort full albums alphabetically by artist and 12 inch singles by BPM. Weird, I know, but I don't think there is a right or wrong way to organize, just what works for YOU.