Weird al is a rather obvious.
But Axis of awesome is also a sheer favourite of mine. their four chords song is a genius composition mashup of many iconic songs throughout the years.
Whitney Avalon is a very underrated one who does some really good and rather witty pop culture themed songs.
Least favourite: Dennis Leary (He lives up to his name)
Around 2016 I was called up on stage by them (Steel Panther) during a winter concert. A year later I was at a show around the same time and a random guy standing behind me remembered me and sent me a video of myself on stage!
I say that to say this: Gloryhole, Community Property, and Poontang Boomerang are some of my favorites! Most recently saw them again in 2023, did not get on stage that time lol