Probably Castillo, but I wouldn't put it past Lora. He was a truly special fighter when he dominated Zaragoza and Davila imo.
Chucho would beat Kora IMO. I had him beating Rose, and with all due respect to Lora, he wasn't as good as Rose. I think Castillo's ramrod jab and intelligent pressure would wind up making early rounds close and late rounds clear. Especially as Lora fades and falls more into his trap of a right.