Can I just say, before I add a couple of names to this burgeoning list (most if not all of which are really good)... is there any school, particularly over the last 36ish years, that has gotten more out of lower and mid-level recruits than us? The answer is a resounding NO!
High School recruit: Shabazz Napier. Composite #88 in 2010. He helped win National Title in 2011; was the most important player, and best player in the tournament, during 2014 National Title run. Got himself lauded by LeBron James and drafted #24 in 1st round of 2014 draft as a result.
Transfer: amazing how many, including - Lasan Kromah, RJ, Tyrese, Tristen, Hassan, Joey C. and Cam. Every one of those guys contributed hugely to either a National Title, or our rise from the depths of despair from last decade.