All of the 400+ Pokemon in this save file are legal and will pass as legit. Every pokemon that can legally be obtained as a shiny has its shiny form in the save file, the other pokemon are there in non-shiny form.
The currently unobtainable legendaries are in box 20.
A majority of the pokemon (and nearly all of the Gen8 Pokemon) will be level 70 with 6IV. The other Pokemon are level 100 and with competitive natures and stats. The movesets are not the best, but with a move-re-learner in every pokemon center this was not as much of a big deal to me. In the future the movesets will improve.
This save does not have any "level 0" pokemon like lots of the other save files currently circulating the internet. Some of the Pokemon will appear in game to have stats/HP of 0. To fix this put any Pokemon displaying this problem in any slot 2-6 in your party and go and battle a wild pokemon. After the battle the pokemon should appear fainted, and can be healed at the Pokemon Center; with all of its stats returning to normal.