Yeah, I wouldn't call either BG3 nor Elden Ring the epitome of their respective genres...
BG3 is pretty non-standout as far as TB goes. It doesn't do anything noteworthy, it is simply just a generic TB system with a rough DnD 5e basis. Not much different to the likes of Kingmaker, Wrath of the Righteous or Solasta.
Personally, I found PoE2 to be a more mechanically interesting TB system (With the caveat of spell casting times).
To say nothing of JRPG style TB systems like FFX, Octopath Traveler, Eiyuden Chronicles or even Pokemon.
Then in regards to Elden Ring... Honestly out of the Souls series I'd put Demon's Souls and Dark Souls 2 above Elden Ring mechanically. All ER has for an edge is its open world gameplay wise.
But then in terms of Soulslikes you have things like Nioh and Sekiro which are simply more mechanically interesting than the Souls series.
Again, with other styles of RT combat such as Monster Hunter, Shadow of the Colossus, God of War, Devil May Cry, the Arkham games, that recent Spider-Man game that was a huge hit (I forget what it was called).
