Deep Cut Recommendations

I’d consider myself pretty knowledgeable on Frank’s music, but I want to explore further into his lesser known works.
My favourites are apostrophe, Over-Nite Sensation, You are what you is, and Hot Rats. He has a lot in the ‘80s that I haven’t heard, other than Broadway the hard way. And I haven’t heard much before Burnt Weeny Sandwich.
I can listen to it all, I’m just not sure where to start.
Thanks guys!