Categories displayed, screenshot follows.

I’ve run into some difficulties with my current project, the top of the image is correct, the bottom is my problem.
The way woocommerce returns my parent/sub category in my shop grid is annoying me, in this case, i want it to show ‘Hjertegarn’ nomatter which sub im in,
On the top example, all products are both in Hjertegarn and in Merino Cotton, and it displays Hjertegarn (perfect!)
On the botom example, all products are in both Hjertegarn and Blend/Tendens, but the shop shows Blend / Tendens(grrr!!! – wrong!)
I think its some alphabetic thing causing it, but not sure, but i would like full control over it, hope you get my point, its rather hard to explain it actually ??

Screenshot:
https://prntscr.com/fxq5dh

I would like to display the main category(Hjertegarn)

Which works on some of the subcat, actually it works on all of the subs which are after the letter H in alphabetic order,

Merino, Sock4 displays Hjertegarn,
Blend/tendens, Cotton nr8 does not.