Yeah, it was "B" mis-memory on my part on by studying the scene in slow-mo. Here's the breakdown on a re-watch.
When Data starts his talking with the computer it offers:
When Data asks for the "funniest" the computer says Stano Riga specialized in jokes about quantum mathematics in the 23rd century. Data dismisses that as too esoteric and continues searching.
The computer offers:
Douglas E. Graves
Ronald B. Moore
Data selects "Ronald B. Moore" as the comic to guide him in "humor." Joe Piscopo played "comedian" Ronald B. Moore.