The crossover featuring K.O. from OK K.O., Raven from Teen Titans Go!, Ben 10, and Garnet, which is titled Croosover Nexus, is airing October 8 at 6:30 P.M.
I don't have a stance on how many horse shows there are, but if you want more, there is an upcoming Nicktoon I'm looking forward to called Pony. It's about a girl and her family and what happens when a talking pony comes to live with them in their city apartment.
http://www.nickandmore.com/2018/03/06/nick-greenlights-pony/
Starting September 21, the MLP movie will be available for streaming on Hulu and Amazon Prime.
https://www.fatherly.com/play/best-kid-movies-streaming-now-on-netflix-hulu-amazon/
When I checked last night, Netflix had everything but season 6, but I just checked again and it only has seasons 1 and 2, and even then, it’s just one episode from each season (A Dog and Pony Show and The Return of Harmony: Part 1).
There were male fans. In 2013, Margaret Loesch, who was an executive producer on the original series, recalled getting from young men in the 80s and 90s expressing their love for the show.
https://www.tvguide.com/news/bronies-my-little-pony-friendship-magic-1068692/
It’s actually part of a new show she’s working on.
https://deadline.com/2017/05/dc-super-hero-girls-cartoon-network-animated-series-2018-1202100531/
I should probably mention that the article is wrong about it premiering in 2018. It’s actually 2019.