There are more peppers like that, too:
poblano - ancho
chilaca - pasilla
anaheim - colorado
mirasol - guahillo
serrano - chile seco
bola - cascabel
~~Also related: green, yellow, orange, and red bell peppers are all the same pepper, just various stages of ripeness.~~ Guess I had my own dumb moment in this thread. Not sure where I read my take, but the reply to mine is correct.
Yeah, seems you're correct. Not sure where I got my take from, probably something I read a while ago. Thanks for correcting me.