Welcome @jimmylegs, I have neuropathy in my feet and legs (no pain, just some numbness and tingling) but have not experienced the symptoms you describe. There does seem to be a connection between neuropathy and muscle spasms. There is another discussion on that topic here:
--- Muscle Spams and Neuropathy: https://connect.mayoclinic.org/discussion/muscle-spams/

While you wait for others to respond to your question, you might find Google Scholar helpful if you haven't used it before. I used the following search phrase - leg spasms during orgasm +neuropathy +men and here are the search results - https://scholar.google.com/scholar?hl=en&as_sdt=0%2C24&q=leg+spasms+during+orgasm+%2Bneuropathy+%2Bmen&btnG=.

Google Scholar is good at finding medical research articles and papers. What I like about it is that you can sort the results by year which helps you find the latest references.

You mentioned being on iron supplements for a year and your condition improved. Are you still on iron supplements?