It's often been suggested that the archer-ranger could have been a controller. Sure, it'd be a bit like a Seeker, but being more than a bit like an existing build didn't stop the Warpriest, or Knight, or Slayer, or Thief...
I don't know exactly how the 2e ranger ended up with TWFing. But...
...in 1e, TWFing was hidden in an obscure section of the DMG. It gave you and extra attack, but a -2 to hit with your primary weapon and -4 with your secondary, which had to be a dagger or hand axe (no scimitars, sorry). If your DEX was over 15, the penalties were reduced. At 18 DEX, you were 0/-1, which was very much worth it.
The ranger had a lot of stat requirements, and a high-DEX ranger was not easy to come up with. Still, the ranger was an obvious Archer archetype, and archery required high DEX. If you've got high DEX to be a great archer, it also made you a very good TWFer. That's a possible path to Ranger = TWFer.
Anyway, it's how the Ranger I played in 1981 ended up doing it. It was quite a surprise, too. I pictured it as a melee backup to archery. But, it turned out, even with a 'STR bow' (also pretty obscure, but yes, they existed in 1e), that you could do more damage flailing away with two weapons than plunking out two arrows per round.
Anyway, Unearthed Arcana and weapon specialization made TWF with paired weapons pretty uber, and 2e ran with that. The rest is history.