10) Lupin III (Lionsgate)
9) Inuyasha (20th Century-Fox)
8) Angie Girl (Columbia-TriStar)
7) Pokemon (Columbia-TriStar)
6) Naruto (20th Century-Fox)
5) Speed Racer (Warner Bros.)
4) My Neighbor Totoro (Touchstone)
3) Dragon Ball Z (Warner Bros.)
2) Sailor Moon (New Line Cinema)
1) Urusei Yatsura (20th Century-Fox)
From this list, I can figure the following details:
1: Fox has the most dubs in this list, with Columbia-TriStar and WB each having two.
2: Of the studios with only one dub to claim, they happen to be the finest classics, with Henson and Totoro, Golden Harvest and Sailor Moon, and Lupin at Lionsgate through Geneon.
3: The only obscurity here is Angie Girl. Literally everything else is well-known IOTL.
4: Through sheer coincidence, Rumiko Takahashi's credit appears twice in this list, once in each half. In fact, it nearly bookends the list.
5: Lionsgate really is shaping up to be a premier anime dubbing studio if it can get a spot on this list.
6: Amazingly, despite not having DC or Hanna-Barbera to flaunt their animation credit, both of WB's entries made it into the Top 5. Not bad for Speed Racer's re-dub, which was up against UY from the start.