Name all franchises that have had fighter, stage, assist trophy, item, or enemy representation in any Super Smash Bros. game.
Developer most associated with series will be given as a hint. Note that many are second-party publishers for Nintendo.
Series are counted the same as counted in-game, so some subsets of a series may be counted separately.
Franchises that only have music or trophy/sticker/spirit/costume representation or are only a part of Pac-Man's Namco roulette taunt are excluded for brevity.
F-Zero added, can't believe I forgot that the first time, thanks for letting me know. "Xenoblade" has been accepted as an answer, and quiz has been updated for the new DLC fighters. Shantae is not on here due to not meeting the requirements.
I tried several variations of xenoblade, must have misremembered that as including xenobladechronicles.