Rick Farmiloe (disney and dreamworks animator) with Thurop van Orman (storyboard revisionist on billy and mandy, creator of flapjack, supervising producer on season 2 of adventure time, season 1 of sanjay and craig, and co-developer of the netflix dreamworks home series) (season 1)

Clay Morrow (writer/boarder on Dexter's Lab and powerpuff girls, would go on to be writer/boarder chowder and SMFA, director on Kick Buttowski and the Mickey Mouse Shorts, and creative director on Billy Dilly) with Carey Yost (done a shit ton of stuff at spumco and various early cartoon cartoons) (season 1) -> Clay Morrow with Cosmo Segurson (director on Pig Goat Banana Cricket) (seasons 2-3) -> Thurop Van Orman with Cosmo Segurson (late season 3) -> Cosmo Segurson with Kim Roberson (character designer on Teachers Pet and Brandy & Mr Whiskers, writer/boarder on phineas and ferb) (season 4)

Kaz with Antoine Guilbaud (prop designer on Rocko, storyboard artist on Catdog, would go on to be a writer/boarder on phineas and ferb, creator of Get Blake) (Seasons 1-2) -> Kaz with Eddie Trigueros (boarder/director on Mighty B!, director on Fanboy and Chum Chum, Wander over Yonder, and the Mickey Mouse Shorts) (seasons 3-4) -> Kaz with Ant Ward (lead CG artist on Tak and the power of Juju, supervising producer on Penguins of Madagascar and the nickelodeon TMNT cartoon) (seasons 4-5)

Mike Roth (non writing boarder on season 3 of spongebob, writer/boarder on phineas and ferb and flapjack, supervising producer for most of regular show) with Tom King (writer/boarder on post-movie spongebob, chowder, and flapjack, director on fanboy and chum chum and Bravest Warrirors) (season 1) -> Mike Roth with Mike Kenny (seasons 1-2) -> Mike Roth with Stephanie Edrel (storyboard revisionist on Megas XLR) -> Mike Roth with JG Quintel (creative director of Flapjack, creator of Regular Show) (Seasons 3-4)

Kent Osborne with John Infantino (writer/boarder and later director on Flapjack, director on the first few seasons of regular show, story editor on Star vs) (Seasons 2-4) -> John Infantino with Piero Piluso (writer/boarder on Phineas and Ferb and Flapjack, director on Star vs) (season 4)

John Infantino and Cosmo Segurson (both board directors) (season 5)

most notable one-off boarders are Sam Henderson (writer/boarder on season 3 of spongebob, creator of the nickelodeon magazine Seen but not Heard comics) and Derek Drymon (writer/boarder on Rocko, storyboard artist on Catdog, creative director on classic spongebob, executive producer on season 1 of adventure time)