I'd like to point out that while FF7 and 8 had free range skill selection (Similar to XIV) Each character was based on a specific job from older FF's.
Cloud Soldier, Tifa Monk, Barret Beserker/Gunner, Vincent Ranger, Yuffie Ninja, Red XIII Monster, Cait Sith PuppetMaster (ok it was the first PM in FF yes.) Cait Sith's Moogle Gambler, Cid Dragoon. Quistis Blue Mage, Selphie Ninja, Zell Monk, Squall Fighter,
If you wanna put it lightly FFXIV and VII had almost mirror Systems. The Character is defined by their Weapon, but they can equip any skills they already know/own.