The enderite horse armor from the Netherite Horse Armor mod linked here

https://www.curseforge.com/minecraft/mc-mods/netherite-horse-armor

is no longer obtainable since that mod is outdated and is the only way to get said armor.

Hopefully there are plans to restore it somehow. Maybe make it uncraftable and you can only find it in end city’s?

Did you already send a private message to P3NG00? The author of this linked mod.

I tried but their account has been inactive for almost 2 years. Haven’t heard anything.