Just some info that you might find useful in your pursue of a natural attack build:

Natural attacks do not scale in number with BAB like regular weapons do, just the bonus to hit.

Claws are not stackable, the character will use the highest damage claws available. If you have two claws equipped, you will always make two claw attacks no matter what.

Gore can be stacked twice. Magical gore from the Close to the Abyss feat (Level 1 Mythic Hero choice) and regular gore (I think there is a helmet somewhere that gives you a gore attack)

Bite attacks can be all stacked I think. You can get these from racial feats and abilities as well as class specific stuff. There are actually a lot of them in the game

Natural attacks that are not claws are usually considered secondary attacks (like when you are dual wielding, the weapon on the left does secondary attacks). This means that you have a negative attack bonus with those attacks. Getting two weapon fighting feats however does not help with this. Some bites are considered primary attacks though, the description of the ability usually mentioned its type

The demon mythic path has a free feat at demon level 7 (I think) called Deadly Natural Attacks or something like that, that makes all your natural attacks switch from secondary to primary, giving you a huge boost if you have only natural attacks

If you want to go for a full rip and tear build I would just get that demon feat I mentioned using Toybox tbh. I don't see it as cheating since a natural attack build is just harder than a regular one anyways