I'm a big fan of The Last Podcast on the Left podcast and it will definitely inspire my gamejam game if I can get my friend to join up with me. If you wanna get inspired I would definitely check out their website and look for the cryptid section (they do aliens, serial killers, etc. as well)
Last Podcast got me into so many cryptids! (Though I will also say to potential listeners: content warning for some less than sensitive humour a lot of the time, much as I love them) I also really enjoy Go Folk Yourself, where they look at the weirdest legends they can find from each state in America, which often involves cryptids.