Honest question, I see a pretty clear split within the overall fantasy RPG genre between top-down isometric RPGs like OG BG and Pillars of Eternity using a max-6 party* and 3D games like the various Dragon Age titles capping at 4 at most. Is there a 3D RPG that uses 6? Not counting any summons, of course, as in both cases there are optional summonable creatures/familiars that don't count towards party size, depending on your choices.

*Or 5 for PoE2, but I'm still counting it.

Experienced lurker. Generally don't say much.
In the venn diagram of BG fans, DOS fans, and 5e fans, I hit all three but lean 5e.