What if SpongeBob SquarePants ended after the first movie?

SpongeBob SquarePants is Nickelodeon's most iconic franchise. But what if it ended after Hillenburg left the show and it declined?

Changes

 * Fairly OddParents would be considered Nickelodeon's top-rated show after the show's ending, being then followed by Avatar: The Last Airbender, Adventure Time, Teenage Mutant Ninja Turtles, The Legend of Korra and The Loud House.
 * Despite that, the show is still Nickelodeon's flagship franchise and SpongeBob still acts as the channel's official mascot.
 * All the bad shows made to imitate SpongeBob don't exist.
 * Nickelodeon would pick up Adventure Time, leading to Cartoon Network to restart his renaissance only after the premieres of Regular Show and The Amazing World of Gumball.
 * Adventure Time: Distant Lands would air on Nick as well rather than Netflix or CBS All Access.
 * After the series finale of iCarly, the channel's live-action schedule would be gradually axed as a way to focus exclusively on animated content and provide stronger competition to Cartoon Network rather than Disney Channel.
 * As a result, future live-action sitcoms would be produced instead for TeenNick.
 * Despite that, Henry Danger and The Thundermans still exist, yet as animated.
 * The only exceptions are the All That and Are You Afraid of the Dark? revivals.
 * A few original shows will take places of some of the shows that were terrible or seasons of SpongeBob.
 * Truth or Square, Atlantis SquarePantis and the stop-motion specials It's a SpongeBob Christmas! and The Legend of Boo-Kini Bottom still exist as one-off specials/TV movies for SpongeBob post-series finale.
 * Sponge Out of Water and Sponge on the Run would still exist as theatrical sequels to the first film, although being traditionally animated instead while still featuring live-action segments.
 * [you can't deny the musical]

Shows
Notes:
 * This list includes exclusively original productions.
 * * = co-produced by Nickelodeon since 2011

Animated

 * Rugrats (1991-2004, TBD)
 * Hey Arnold! (1996-2004)
 * KaBlam! (1996-2000)
 * The Angry Beavers (1997-2001)
 * CatDog (1998-2005)
 * The Wild Thornberrys (1998-2004)
 * As Told By Ginger (2000-2006)
 * The Fairly OddParents (2001-2012)
 * Invader Zim (2001-2006)
 * ChalkZone (2002-2008)
 * The Adventures of Jimmy Neutron: Boy Genius (2002-2006)
 * All Grown Up! (2003-2008)
 * My Life as a Teenage Robot (2003-2009)
 * Winx Club* (2004-present)
 * Danny Phantom (2004-2007)
 * Avatar: The Last Airbender (2005-2008)
 * Catscratch (2005-2007)
 * The X's (2005-2006)
 * El Tigre: The Adventures of Manny Rivera (2007-2008)
 * Tak and the Power of Juju (2007-2009)
 * Back at the Barnyard (2007-2011)
 * The Mighty B! (2008-2011)
 * Making Fiends (2008)
 * Adventure Time (2010-2018)
 * T.U.F.F. Puppy (2010-2015)
 * /Jeanette of the Space Pirates/ (2010-2016)
 * The Legend of Korra (2012-2014)
 * Robot and Monster (2012-2015)
 * Teenage Mutant Ninja Turtles (2012-2017)
 * /Olivia and Leroy, Middle School Detectives/ (2013-2018)
 * /The Last Dwarf/ (2013-2017)
 * /The Thundermans/ (2013-2018)
 * /Henry Danger/ (2014-present)
 * Harvey Beaks (2015-2017)
 * /The Afterlife With María/ (2015-present)
 * The Loud House (2016-present)
 * Bunsen is a Beast (2017-2018)
 * Welcome to the Wayne (2017-2019)
 * Rise of the Teenage Mutant Ninja Turtles (2018-present)
 * Pinky Malinky (2019-present)
 * The Casagrandes (2019-present)
 * It's Pony (2020-present)
 * Glitch Techs (2020)
 * Adventures in Wonder Park (2020)
 * Untitled Star Trek series (TBD)
 * Untitled Garfield series (TBD)

Live-action

 * Are You Afraid of the Dark? (1991-2000, 2019-present)
 * All That (1994-2005, 2019-present)
 * Romeo! (2003-2006)
 * Drake & Josh (2004-2007)
 * Ned's Declassified School Survival Guide (2004-2007)
 * Unfabulous (2004-2007)
 * Zoey 101 (2005-2008)
 * Mr. Meaty (2005-2009)
 * Just for Kicks (2006)
 * Just Jordan (2007-2008)
 * The Naked Brothers Band (2007-2009)
 * iCarly (2007-2012)
 * True Jackson, VP (2008-2011)
 * Big Time Rush (2009-2013)
 * Victorious (2010-2013)
 * Bucket & Skinner's Epic Adventures (2011-2013)
 * Fred: The Show (2012)
 * How to Rock (2012)
 * Marvin Marvin (2012-2013)

Animated

 * Little Bill (1999-2007)
 * Dora the Explorer (2000-2019)
 * Oswald (2001-2004)
 * The Backyardigans (2004-2010)
 * Go, Diego, Go! (2005-2011)
 * Wonder Pets! (2006-2009)
 * Ni Hao, Kai-Lan (2007-2011)
 * Bubble Guppies (2011-present)
 * Wallykazam! (2014-2016)
 * Dora and Friends: Into the City! (2014-2016)
 * Blaze and the Monster Machines (2014-present)
 * Fresh Beat Band of Spies (2015-2016)
 * Shimmer and Shine (2015-present)
 * Nella the Princess Knight (2017-present)
 * Sunny Day (2017-present)
 * Butterbean's Café (2018-present)
 * Abby Hatcher (2018-present)
 * Santiago of the Seas (2020)
 * [replacing Baby Shark, original, spin-off to one of the old shows (definitely not Dora again or Little Bill because of reasons, likely something like Backyardians, Fresh Beat Band again, Wonder Pets or TBD) or preschool version of paramount property (including nick shows, Star Trek, Wild Thornberries or stuff like that)]

Live-action

 * Blue's Clues (1996-2006)
 * Oobi (2003-2005)
 * Blue's Room (2004-2007)
 * Curious Buddies (2004-2005)
 * Jack's Big Music Show (2005-2007)
 * The Fresh Beat Band (2009-2013)
 * Team Umizoomi (2010-2015)
 * Nick Jr. Puppies (2015-2016)
 * Mutt & Stuff (2015-2017)
 * Blue's Clues and You (2019-present)