What are some good prog rock bands?

[Damien Thorne]

I already am familiar with Yes, King Crimson, Genesis and Gentle Giant. Looking to unironically expand my horizons here.

 

[Jason Wynn]

Jethro Tull

 

[Pee Cola]

Technically they're Krautrock, but CAN is worth a listen.

 

[Beanie]

Rush, Porcupine Tree, Haken

 

[Jones McCann]

Pink Floyd obviously

 

[Agent Abe Caprine]

King's X.

 

[Torque Wheeler]

Dream theater is a bit more operatic, I also like Max Webster because Geddy Lee is on a few tracks. Check out Hawkwind and Caravan, Wishbone Ash. Pushing the definition I'd include ELO. Starcastle is fun.