ReasoningGate + Creator = dumb stuff. He's been experimented with recently so this is something pulled out just to see if it could've been done.
The Creator is handy if you want to use him for Chaos fodder (and if your opponent guesses correctly on a Reasoning) but he's also one of the best walls in the game with a effect that makes perfect advantage of the deck rushing though itself for the big monsters by letting you get them back for the relatively low cost of one card, and let's just face it, you're almost always going to draw something you don't need for the effect anyway lol. Said monsters are all big and bricky minus the x2 Crane for draw power and Sinster Serpent for, well, being Sinster Serpent. Tyrant Dragon is real handy for dealing with Warrior backrow spam given it negates targetting from a Widespread or Saku play, that could be probably sided out but it's more than effective for what the deck wants to do. Everything else is bar for the course.
Spells cycle though things faster. The real point is to do as much as soon as possible, so you play all of these to just get those huge pushes on the board to overwhelm fast. The traps for that reason are very low, kept for removal only.
Side deck throws in some extra Chaos stuff alongside essential backrow for certain matchups, Forbidden especially for mirror matches is very handy if you can catch a Reasoning or a Gate off it.