The other gallery wasn't getting updated, so I made my own. It should be the most complete and up-to-date of UmaYon translations currently available.
All credit for the translation belongs to people at the UmaMusu Discord; head over there if you want to help them out.

Update: added chapter 37.

Sources:
Chapters 1-13, 37 (p. 1-27, 74-75): https://mangadex.org/title/43997/umayon-mini-comics
Chapters 14-36, 39 (p. 28-73, 76-77): https://umamusume.tumblr.com/ - these are also now available on MangaDex.
Chapters 83, 91, 92, 99 (p. 78-85): https://twitter.com/uma_musu_en