Guest Appearances
This one is significant because it's a media tie in with a popular kid's TV series, the Electric Company.
I'm not going to list all the guest appearances, it would fill the page. According to comic vine, Hellcat appears in 866 issues.
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In 1972, Marvel made a push to cash in on the feminist movement with several female led titles. "The Cat" was front and center in that promotion. That's pretty significant.
I guarantee there are other ads, but I'm not going to waste time looking for them.
So again, when you say:
and using your criteria for "spotlight", you are just plain wrong.