447707
I'm sure you did.

Hopefully I put all of those stories in the right spots <.<

447619
I added them

No Tentacle ponies?
encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcSbUs_ifFZlNTz_FjUVH96FE2f6aG4FYS5CDnQ_Hx3Pzro7DmrvjdAtySmyh8KCiGjBRTo&usqp=CAU

447532
I am glad you are part of this group too.

447517
I added them

I just remembered the Umbrums. I've only really heard about them in terms of the comics, but the fandom wiki says they are shadow ponies (like Sombra, but there were others too I think).
Also, would you say crystal ponies are their own species? I think crystal ponies are different from normal ponies. They're only transparent through the crystal heart's magic, but they still have unique traits which remain constant whether or not they are under its affects. Crystal ponies always have gradient manes that are not present in the other pony species. Crystal ponies may also have jagged eyeshines, although these aren't always present and other species may temporarily gain them under the effects of the crystal heart.

447514
I will try and fix it

There's a lot of magical creatures in that list. It is very long. Took a while of thinking, but I finally discovered something missing. G3 Flutterponies aren't on the list from what I can see. Also, "buffalo" was missing a capital letter. I don't know if you'd count pegacorns, but my personal definition would be a pony with a horn and wings but no earth pony attributes or other special characteristics unique to alicorns.
The list is very long, and I can't imagine how long it would have taken to compile all of that.