Ha, I think Chirrut, Baze, and K2 are the best characters (ok, and Krennic). It’s mostly Jyn and a little bit Cassian that I thought fell flat initially. Though with repeat viewings I’ve come to like them as well.
But Baze and Chirrut are easily my favorite characters from R1 and I wish we could have gotten more of them (still need to get their little novel). Heck, they’re some of my favorite characters from all the new Disney era films period!