I tend to use videocardbenchmark.net by PassMark, but I'm sure there's more out there.
Lots and lots of YouTube reviewers give their opinions and various benchmark-oriented stats around this. Gamers Nexus are pretty good in my view (though their videos tend to take a long time to not say a whole lot)
It's hard to express how much I hate when the only source of information is a YouTube video. Discord "servers" are almost as bad.
Is it so hard to make a list? Ideally, a sortable one?