A few config types have more than one supporting library: Color (Cloth config, MaLiLib, MaLiLib API, ukulib), Hotkey (MaLiLib, MaLiLib API), and Button (MaLiLib API, ukulib, YetAnotherConfigLib). (note: this does not include libraries that support codec based configs)
The other ones are all one-offs:
Bonus fact: The config library supporting the most extra config types is MaLiLib API, with 4: Color, Hotkey, Pair and Button. After that, YAML Config at 3, and MaLiLib, Cloth config and ukulib all at 2.