AMBOSS and StatPearls (https://www.ncbi.nlm.nih.gov/books/NBK549834/) say paragangliomas arise from chromaffin cells. Also, if I am understanding uptodate correctly, the understanding is that they are not glomus cells. "All were previously referred to as chemodectomas. However, this is a misnomer, since only the carotid body paraganglia act as chemoreceptors [7]; this term should no longer be used. Older terms for tumors of the jugular paraganglia (glomus jugulare) and the tympanic paraganglia (glomus tympanicum) should also no longer be used; the term jugulotympanic paraganglioma is preferred [8]. (See 'Hereditary syndromes' below.)"
Paragangliomas originate from paraganglia in chromaffin-negative glomus cells
