Well... there is no official Crickhollow Kinship thread here.
Here are the search results here for Kinships on Crickhollow but I'm sure you've already seen all of these results... I can't imagine you wouldn't have done a search first. If what you seek isn't in that list, I doubt it is on the forums at all.
Here are Google results for LOTRO Crickhollow Kinships and again, I'm sure you have already seen these results, including all the listings there in the beginning for specific sites for individual Crickhollow Kinships.
You can try the Lotro Kinfinder.
Feel free to start digging to see what you can turn up. Maybe you can start a new thread, and title it something along the lines of Listing the Crickhollow Kinships, or Listing all Kinships on the Server.
However, this assumes that members of all the active kinships are even on the forums here... and that you will have more luck where others before you have apparently failed to be able to get a comprehensive listing of the Kinships on Crickhollow.
Someone started a thread about the Vilya kinships, to get people to specifically provide information on whether the kinships were active or not... to transfer that data to the Lotro-Wiki. Maybe you can take on that challenge for the Crickhollow page.
[CENTER][URL="http://lotro-wiki.com/index.php/Social:Kinships_of_Vilya"]Vilya Kinships[/URL] - [URL="http://lotro-wiki.com/index.php/Social:Lost_Alliance"]Lost Alliance[/URL] - [URL="http://lotro-wiki.com/index.php/User:Tuveneil"]Me[/URL][/CENTER]