The early Tanfoglios were CLONES of the CZ, but over the years they've changed a lot of details, so there's not much interchangeability -- so they're no longer clones.
I've been trying without success to come up with a firearms term that means "somewhat of a clone but with some significant albeit not substantial changes".
"Replica" implies a non-functional model. "Emulation" is hard to understand. "Copy" maybe?
Maybe it's best to say that the EAA Witness / Tanfoglio line and the Canik 55 C-100 are designed in the CZ 75 pattern.