That said, I would nudge Pillars of Eternity and Pathfinder: Kingmaker above PST as they have an equally good amount of story, NPC interaction, they balance combat better. Pillars II, Wrath of the Righteous and Tides of Numenera, otoh, are below the PST bar in my opinion but ymmv depending on tastes. On the Divinity side, DOS:2 is also a good competitor in the list, although I find it the story tends to be too diluted by combat.

Notably many of the titles I listed above have had Avellone involved at some point (I think he had been involved with Numenera, DOS:2, Pillars I and Kingmaker, maybe more).

I was very skeptical about BG3, especially because even if I listed DOS:2 above, I didn't really like it too much, I'm no Larian fan. But I played the early access and it seems to be golden good so far.

Otoh I replayed (for the billionth time?) all IE games recently and while I still consider PST to be the best IE game ever (only BG2 comes close) it's definitely not uniform. The plot weakens after leaving Sigil, and so do side quests and non-linearity (it's actually pretty linear overall, but after Sigil it doesn't even maintain the illusion). Even the interactions with NPCs are sometimes lackluster (e.g. I would have "pushed" Morte more on the "don't trust the skull" bit) I felt (but it's personal opinion I'd say) that many interactions in PoE went deeper than that.

Anyway, these are opinions and I know of at least one PST fan who would trash the PoEs, Numenera and the Pathfinders (but loved DOS:2), so YMMV.