I did a quick search a few minutes ago and I have read that it was frequently present among WHG too! Maybe it was introduced to Iberia by them? I think mtdna haplogroups are quite hard to trace genealogically unlike Y-DNA haplogroups... Sigh
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Family Tree DNA is having a discount sale now thru April 30th. https://www.familytreedna.com/
There might be another sale near Mother's Day, which is May 11th.
The mitotree is still updating so mine might change. I'm also on yfull and they have my mtdna there as J1c3f1*. It has also moved from where it was last time I looked.
I've marked in yellow where I am placed.
https://i.postimg.cc/503jtPqx/mtdna250423.png
https://www.yfull.com/mtree/J1c3f/