@alexadeswift quite possibly TMI but I think the missionary position shouldn't necessarily be offered as the 'default' position anyway. I find it physically uncomfortable, personally.
I'd more recommend 'reverse' cowgirl for whoever's inviting / accepting. I guess it depends on both / all people's exact anatomy, rough size, body shape, etc?
Like, especially if either or multiple of them are chubby, fat, or whatever. Jiggly and huggable are great but they do obv affect how bodies can spatially fit together.
... idk if that was really your point tho actually, now I think about it.