12th Century Coinage of Norse Gaelic Lords

What coinage did the patchwork of Norse Gaelic Lords' that ruled the Kingdom of the Isles use around the 12th century?

1. https://en.wikipedia.org/wiki/Kingdom_of_the_Isles

I found the below reference that discusses the Kingdom of Scotland and the Scottish Penny that started with David I, but I am looking specifically for the Kingdom of the Isles.

https://en.wikipedia.org/wiki/Scottish_coinage