there's nothing exactly like this, but the only sharing game that I enjoyed as much as I did with Moonripple is
Life in Windvale
It's fast-paced, but it's written well and progression feels natural. Sharing is not optional there, but more "hardcore" stuff, like the wife eating bull's cum, is. Many options for cuckqueening.
Unlike games you mentioned, in Life in Windvale, just like in Moonripple, the world feels more real, grounded, it's not a world where all girls are sluts and all guys are constantly horny and everything revolves around sex.