Agreed you should pick a system or genre you like and listen to them play that. I love the Side Quest Side Sesh podcast they put out at the start of lockdowns when they could no longer play in person. That's what get me into it after being suggested by friends. It's a relatively short play through of various PFS scenarios (37 episodes) compared to their flagship play through of all six books of Giantslayer (300+ episodes). They're currently playing a 2e conversion of Strange Aeons for their live shows while they get ready to launch Gatewalkers. Like the OP said, they have branched out to tons of stuff including Starfinder, 2e, Blades in the Dark, Traveller, Delta Green, etc.