This is mostly driven by the rarity
Theres no rule that says one person is limited to one mother or one familial composition, and thats true for real life as it is for fictional elves
Wayta, Trainer Prodigy isn't a Dinosaur nor does she directly mention Dinosaurs in her card text, but nonetheless she was literally made to be the commander of a Dinosaur Enrage deck, an "Enrageharmonicon" if you will
4/4 Illustrated by Misei Ito Standard Legal Alchemy Legal Pioneer Legal Historic Legal Modern Legal Brawl Legal Legacy Legal Comp
Ghalta, Stampede Tyrant Ghalta, Stampede Tyrant strikes me as the kind of Timmy card that overruns casual tables unprepared for a turn 5 or 6 Ghalta accompanied by an Eldrazi but falls apart when prodded with interaction from a prepared table
Dozens of archetypes, most representing between 1% and 3% of the field, reflect the depth of today's Standard