Got into this conversation after watching the MG School Riot episode again:
Which celebrities went under different/slightly different first names on game shows?
On Match Game '7x, Ed Asner went under both "Ed" and "Edward" on the name plate, as did "William" and "Bill" Shatner.
"Jim J." Bullock was sometimes known as "Jm. J", (no i) and occasionally as just "Jim".
"Zsa Zsa" Gabor was also known as "Princess Zsa Zsa" on Davidson's HQ, when she was married to Frédéric Prinz von Anhalt, aka "Prince Frederick".
Others?