in this article..
http://www.snipercentral.com/gordon.htm
it states that Shughart and Gordon are the only snipers to have received the MoH. I stumbled across this while reading a book,

http://www.ww2gyrene.org/WW2GyreneMOH_hawkins.htm

And also saw this from earlier in the year.
http://reportergary.com/2011/08/marine- ... -of-honor/

Thought it might need to be updated, not trying to prove anyone wrong, just figure it got missed (or Mel doesn't like Marines) lol.