Thompson, Morrison, Vansant are pretty obvious (not sure about the order). Not as obvious who comes after that, except that Tomasevic stands out as the clear #3 outside in school history.
Desilets was the best blocker in school history Tomasevic is in the top 3 (with Vansant and Morrison) for kills, points, attacks, and has the most service aces in school history Miyashiro generally leads in almost all the libero stats
There is pretty clear dominance in the record book between Vansant/Morrison/Tomasevic and anybody else for points, kills, attacks. Angela Bransom is close in kills and attacks, but they didn't track "points" back when she played.
Benjamin has the best single season tally for kills and kills per set, but she's only 7th on the list for career kills.
How deep do you go down the list for hitters before you put in a libero or a blocker?
In no particular order. Ogbogu might not be on everyone’s list, but I think her combination of offense AND blocking puts her above most.
I originally had Rachel Adams instead of Ogbogu (probably because she's really blossomed as a pro and Olympian), but she did not have a stellar freshman season while Ogbogu was a four-time All-American.