I'd say there are really only four examples under Hurley, as I think CV was already very good as a sophomore:
Whaley - as someone else mentioned it wasn't statistical but his overall play in his final year that was impressive.
Newton - Went from solid stats as a senior (first year at UConn) to being the best PG in the country as a fifth year
Diarra - His jump in play from junior to senior to fifth year is just something amazing. He went from 8-9th in 2023, to sixth man of the year in the BE in 2024 to a solid starter and arguably UConn's most indispensable player
Samson - His first two years were nearly non-existent. He was a more than solid backup last year and a solid starter this year.