There are some ids that are of species that have hundreds or at least numerous observations and you are the one who was the first to figure out its identity. Here are some of mine:
Messena sinuata - 650+ observations!
(Genus) Tenuicapitis - 150+ observations
Messena distanti - 100+ observations
Hecaloidella pacifica - 70+ obs.
Zeunasa carinata - 60+ obs.
There are several others with a decent amount of observations, like 20+, but they were once a mystery or lacked and id and I found the genus/species. What are yours?