I'm not sure the term 'Hispanic' is highly used.
The term for 'Domains' in Spanish is 'Dominios'.
If somebody was searching the term 'Dominios' they would not need to add a word like Hispanic, Spanish, Latin or Espanol as they are already searching the Hispanic Term.
For somebody in an English speaking country, I think it is much morelikely that they would use the prefix, 'Spanish or Latin' over 'Hispanic'.
I was however suprised that Hispanic/Spanish/Latin Domains all provided no overture results at all.
Even so I'm sure you will find a buyer as names containing the word 'Domain' are very popular. If you search the terrm 'Domain' on Sedo by the number of bids, you will see that over 175 names containg the KeyWord Domain have received offers, some as many as 20 or 30.