If you are looking to develop your own version of an Ohio mod for this specific Minecraft version, here is the standard workflow:

: You can find custom music discs (like Rick Astley’s "Never Gonna Give You Up"), new food items like Corn , and specialized tools. Development Basics for 1.19.2

: Many versions add custom ores such as Mithril , Tungsten , Uranium , and even Dragonstone , which can be crafted into unique armor sets.

: Expect weird and frightening mobs like Impostors , Crewmates , Slenderman , and the "Cursed Steve".