Hi! Yes, ground tilesets are organised in this way sliced in an 8x8px grid to cover all possible tile connections. You should be able to configure tiling rules in your engine to use auto tiling without problems.
You can download the free asset packs Minifantasy - Forgotten Plains (this asset pack) and Minifantasy - Dungeon to check if they fit your needs. Other asset packs in the collection follow the same standard.
If you have other questions feel free to ask :)