Wolfox

we haven't seen much of him (and it's been a while since I saw V4) but Whitley seemed pretty satisfied with his situation.  Cinder also doesn't seem like the lonely type much, even if she is alone

I bring Emerald and Jaune in as contenders

Jaune has Ren and Nora to comfort him when needed, so not really. as for Emerald... I would say she has Mercury, but I doubt merc is much of a touchy-feely kinda guy...

As for Cinder, I named her because, if she's still alive, most people would think shes Dead. so she would not have many people around her.

Adam is extremely lonely now too, with what happened in V6Ep1 and all

Again, I don't think Cinder / Adam would really care about companionship, at least currently. so despite being alone, probably aren't that lonely. at least not in a normal way, maybe in a kinda twisted way.