Hi Unknown72,
Kingofturves here. Apologies for not reaching out. My laziness/incompetence with navigating the labyrinthian nature of the Dwarf Fortress forums.
Some timidity at reaching out to strangers. Some impatience in just wanting to play around with the files and using it as a motivation to edit text files and see how things work.
I wasn't sure of the status of the pony mod community for the steam version.
Some of the search results for google were for much older versions of the Pony mods, and some of them seemed quite divergent from the FiM TV series.
So I wasn't exactly sure who to talk to.
I think I used your files as a source. So I'd like to ask retroactive permission. Hopefully I've stated on the steam page that I don't view it as my own work.
Would you like crediting on the page as a source, in text files in the mod, etc.
Not exactly such on the etiquette of these things as the last time I ever messed around with text files was making a few scenarios in Civilisation II.
My edits to the files for the mod have been to mainly just have the MLP races, but mostly using the Dwarf Fortress items, clothes, etc.
Have any of the races as playable civs.
I do fancy trying to work out how to add Deer as a replacement for Elves as the Wood obsessed tree dwelling civilization.
I'm curious as to whether Diamond Dogs can be modified to be able to mine without the need for picks.
I also wonder if its possible to have a player race be ruled by a legendary monster, for example, have the Alicorns be generated at world's creation like other megabeasts (dragons etc.) As they don't seem to pop up in the pony civs?
Would it be okay to come to you to advice on how to edit text files, I assume this stuff is mainly your work, or your work as part of other user's like: Sorcerer or Nidokoenig.
I'm kinda fascinated as to how these mods develop over the decade or so along in parallel with the game itself.
Would you like me to rename my uploaded mod to avoid confusion, help promote the one that you're working on to release on steam?
I'm looking forward to seeing what you can do with the graphics.
I apologize for being a bit bull headed in wanting to get a mod as soon as possible.
Hope you've had a good Christmas and wish you a Happy New Year! 
It's all good! I can understand the want to get it out there, I just wanted to make sure people knew that the one you did wasn't the one that me and the person I linked were working on, to avoid any confusion in getting the 2 mixed up!
Credits wise, I actually haven't contributed much to the mod itself, just minor editing to keep it up-to-date with the DF version of the time! I'd recommend absolutely crediting the original creators Sorcerer and Nidokoenig on the steam page however, as this is all their work with my minor edits!
In terms of deer I could see that as just copying the Earth Pony set up, getting rid of it's Castes (as that's how the cutie marks work), and adding Horns to them (in all regards this wouldn't be too hard to do, just time consuming.)
Diamond Dogs being modified to not need picks for mining does sound possible, but I'm struggling to remember what the tag would be for enabling it if any. Same with having Legendary Monsters ruling a civ, though I think that already happens as sometimes Dragons, Demons and other creatures become leader/monarch of a Civ, albeit rarely.
I would highly recommend checking out the DF Wiki and keeping an eye out on the DF Modding Questions thread, the DF Wiki is really good at documenting all the information needed for making your own mods, like how to make your own unique stuff, how tags work, etc etc, and if you ever have questions, the Modding Questions thread users typically answer near instantly. The Kitfox Discord would also be a good place for modding help and information!
And absolutely feel free to edit it as you like, it's open source for anyone to utilize and do what they will with it!
In terms of name, maybe adding something like "Unofficial" to it or the like? Up to you really, I don't really mind the name itself, I'm fairly sure the one Poopsikins is working on is going to be called My Little Fortress or some variation of it.
You have a good Christmas and new year as well!
And speaking of progress, have this funny little preview as Poopsikins tries to get it working right.