Name three Apple CEOs.

You can probably rattle off Steve Jobs and Tim Cook, and maybe throw in John Scully. But—and I know the Michael Spindler Stans will sound off in the comments after I say this—Apple has had way more forgettable CEOs than you probably realize .

John Ternus, who will replace Tim Cook as Apple CEO in September , could become a celebrity CEO like Steve Jobs and Tim Cook. Or he could be another Gilbert F. Amelio . Here’s what to know before you place any bets on which kind Ternus will be:

Inside Apple, he has a reputation for being a sweetheart

Steve Siefert, Ternus’ first boss at Apple, said in a New York Times profile that when Ternus had the opportunity to move to a private office from an open plan workspace where he sat with his underlings, he declined.…