I (CrazyGuy) don't own a single one of these mods, let's just make that clear. The closest thing I (CrazyGuy) have is my name in the IDT mod credits.
As for getting permission to use any of these mods. Most of them outright state they don't care very much so long as they get linked. These links can be found on the mods page
If your mod is in my pack and you, for whatever reason, don't want it to be there, shoot me an email at [email protected] or contact me on discord and I'll get right on it as soon as I can and push the update.