Did the fighter/rogue/cleric/wizard core and its various iterations come from tournament play?

@nostupidquestions Did the fighter/rogue/cleric/wizard core and its various iterations come from tournament play?Or maybe there's just not that many permutations for team compositions in early dnd?

AI says"Character Class Distribution

For AD&D tournament play, successful teams typically included:

At least one primary fighter (Fighter, Paladin, or Ranger) One primary spellcaster (Magic-User or Illusionist) One healer (Cleric or high-level Druid) One skill specialist (Thief or Bard)"