a great one for

a great one for (doing something)

Prone or apt to do something (often because one likes it). I hate talking on the phone, so I'm not a great one for returning phone calls.
See also: great, one

a great one for

a habitual doer of; an enthusiast for.
1994 Romesh Gunesekera Reef Early on I learned the value of making lists from watching Mister Salgado. He was a great one for lists.
See also: great, one