Recommend me some... ambient? music similar to this

So, from time to time in video game soundtracks, I come across music that makes me really tranquil and peaceful. The sensation of getting nostalgia without views of the past is often present.

But I can't quite find similar music by search. When I search for music that's ambient or tranquil, I usually get something much more minimalist and... natural.
So, either I don't know what to search for, or I am getting used to a sort of "mainstream" type of this music, and don't yet have the acquired taste of GOOD music of this sort.

But what would you call it? It's not quite ambient, it's just... serene...

YouTube - Final Fantasy XIII OST - The Gapra Whitewood [Enhanced]
YouTube - VGM Picks 6 - Chrono Cross - Jellyfish Sea
YouTube - Best VGM 71 - Donkey Kong Country 2 - Stickerbrush Symphony


I am trying to make an easy-listening album to run now that pretty much every day is nothing but homework for me.