Dear Ms Martinez,
Thank you for posting your request on History Hub!
Various offices within the Department of Defense have informed us that no agency of the Federal Government has ever compiled comprehensive lists of all individuals who served in the U.S. Armed Forces in all the wars/conflicts from particular ethnic groups.
You may want to refer to the National Archives Records Records Relating To The Korean War for additional information on National Archives records that may be useful to you.
Additionally, we located a website titled Hispanic Americans in the Korean War from the U.S. Army Center of Military History and a book titled Hispanics in America’s Defense from the Office of the Deputy Assistant Secretary of Defense for Military Manpower and Personnel Policy that include general information.
We hope this is helpful. Best of luck with your research!