I'll be interested in any answers to this one, too! Coming to the 5e druid for the first time in BG3 I can see that there is a big focus on the wildshape transformation of the druid, which I confess I didn't really use in the original games. Though I don't know the other rulesets either except through games, and I don't recall my druid having a companion in the original BG games though I did have one in NWN. More than willing to accept my memory being faulty there, though.
I can see from looking at the druid spells for 5e not yet implemented in BG3 that there are ones that let you summon or conjure beasts or elementals, so perhaps druids are expected to leverage those rather than have a single animal companion like a ranger. Perhaps of lovers of nature generally, they're not supposed to show favouritism!
Hoping that some of the long-time D&Ders who are sometimes around on these forums can shed some light on the changes to the class.
