I know this is a bit of a bump, but I had a couple of ideas I wanted to mention.
Are all the units Terran? Obviously some of them look more Protoss than human, if they are Terran what is their story? Bio-engineering? Is it a suit of some suit?
#1: I don't have any ideas here, maybe the name of some ancient magician's group?
#2: I'm thinking maybe some kind of ancient sword group, the elite guys. I've looked around and can't find anything, but if you could find something that actually sounds decent it might work.
#3: I really like the idea of a Norse name for this unit more than any others - the Terrans seem to prefer using Norse mythology for their mechs more than anything else. Unfortunately all of the most common names have been taken. The best names i can find in Norse mythology would be Magni (son of Thor, god of strength), and Tyr (god of war). Vali is another option, though I don't like the name as much, he's the god of revenge.
#4: This might be a bit cheesy but maybe something like a K10? I know K9 stands for the scientific Canine, but K10 sounds like an upgraded version of the original.
#5: This guy definitely makes me think of Wolverine. I don't know if you want to key off a movie, but it would be a cool idea.
#6: I noticed he's got a code on the side of his armor (C3-54). You probably wouldn't want to use that code but the idea of an acronym/code name like that seems like it might work. It would bring a bit of a Star Wars feel to him. If you decided to go with this you could probably even alter the skin to put that name on it instead of the C3-54.
Hola! :D Yo hablo español y me intereso mucho tu proyecto, asi que ahi va.
Primero no se de como traten esos protos al principio pero podrias llamar al primero 1)como los fanaticos de los taldarim en el coop (No se como es en ingles) y al segundo2) Blade Master o Master Swordman.
3) Este Dreadnought (jeje)
4) Este Combat wolf/dog o explorer
5) Wolverine o Slasher
6)Jumper, Jumping artillery (no se me ocurre nada)
7) Combat medic o algo asi
Se que no son muy inteligentes pero bueno, queria aportar :D