If I could choose but one jazz - no, any style - harp CD, it would be the Prestige twofer of Dorothy Ashby combining her two LPs Hip Harp and In a Minor Groove - the reissue is titled like the latter. Flutist Frank Wess is an ideal partner, and the rhythm men (including Roy Haynes!) swing with zestful elegance.
I have heard several Ashby albums, but these remain the best for me.
There was a Japanese harpist following her style, Tadao Hayashi, who was killed in 2001, I have two excellent jazz LPs he made, three of them are available from a Phillipine site (that's where he lived last):
http://www.book-of-dreams.com/philippine-music8.htm