It looks like Circle Jerk was presented virtually during the pandemic. It's not clear whether it was streamed live or as a pre-recorded version. I'm guessing it was pre-recorded because it was streamed several times. It may be the first Pulitzer finalist for drama to have never had an in-person live performance prior to being a Pulitzer finalist.
Stew completed its run in Feb 2020, produced by Page 73, who also produced A Strange Loop.
The Hot Wing King opened at Signature on Feb 28, 2020 and was supposed to close on Mar 22. This one is the only one of the three I had heard of before today, but it didn't get that much buzz at the time, at least not the amount that a Pulitzer winner usually gets.