Doublestack position

Hi people!
So I've bumped onto this a very few times, and unfortunately I do not know what the name was of the videos or stars, more than that I freaking loved seeing it.

I think its called double stack, table position, usually as a F/F/M threesome position.

One girl is on all four, whilst a another lies on top of her lined back to back and ass "stacked" lying onto their others. Girl on top with legs spread. Both take turn getting fucked by the guy or third girl.

Some similar I've seen is from a girl called Alexis, doing alot of lift carry fetish. She did a pair of clips where she and a another model teamed up, Alexis lifting a third girl up standing bent forward, locked elbows back to back and gotten her finger fucked and st****d.

I seek these kind of positions as being an ass fanatic this is an amazingly hot position. Please help me find.