Compilation of Final Fantasy VII definitely includes Before Crisis, Crisis Core, Advent Children, Dirge of Cerberus, the original game, along with several books and animated specials. Final Fantasy VII Remake has had contradictory word of god statements on whether or not it is part of the Compilation and the in game evidence is inclusive at this point. So in terms of what goes in Compilation of Final Fantasy VII the original game is a "yes" and Final Fantasy VII Remake is "no one is knows for sure yet".