Snowballs Freeze Mobs is a minimalistic configurable mod which makes it so that hitting a mob with a snowball will result in it being frozen.
All available config options:
freezeTimeMs default 5000, min 0, max 3600000
The amount of time in ms the mob hit will be frozen for.
An example with an ocelot:

You may freely use this mod in any modpack, as long as the download remains hosted within the CurseForge or Modrinth ecosystem.
Serilum.com contains an overview and more information on all mods available.
Comments are disabled as I'm unable to keep track of them across so many separate mod pages.
For issues, ideas, suggestions or anything else there is the Github repo. Thanks!