This is not a "pair"I see them as pairs
Learned Arcana on a Nurtured Magician
Raw Arcana on a Natural Magician
Learned Fighting Styles taught to a Nurtured Warrior
Raw Fighting Styles taught to a Natural Warrior
Arcana. Your Intelligence (Arcana) check measures your ability to recall lore about spells, magic items, eldritch symbols, magical traditions, the planes of existence, and the inhabitants of those planes.
you could make an argument for wisdom applying there, but not charisma & not dna. That doesn't even get into the massive overlap in spell lists. Paladin/cleric & Ranger/Druid have some overlap, but not so much that they effectively play almost the same. Why is arcana even on the sorcerer skill choice options instead of a wizard class feature or something?