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While I agree that Finegold is at the weak end of Grandmastery I don't think that that is the sole criterion for prominence. He's one of two current GMs I can name from the US, the other being Nakamura, due to his videos on the St. Louis and, now, Atlanta Chess Clubs. There's a few others, but I don't know if Soltis is playing these days. So I think the claim of "prominence" is reasonable. Although, thinking of British GMs the most "prominent" is probably Raymond Keene due to a mixture of self-publicity and plagiarism - prominence is not an unequivocally positive aspect.