I cannot say which is used more. And some people use pseudonyms.Do people typically use their forum name or IRL name in the catalog?
I'd recommend not using your exact forum name, because with that zero in there, it'd be unsearchable as most folks would search "jakeoftrades". Or you could use "JakeOfTrades" with an O for your catalog name.
My normal spiel is, "I recommend using whatever name you say (if any) when you say, "recorded by [your name]" as that's how listeners will look for you. (Keep in mind that prospective employers, classmates, enemies, etc. can also find you using the catalog name, so be cautious if privacy might be an issue.)"