There was a S-III Team Echo but they’re more dead than Johnson. So are these two teams S-IIs or S-IIIs? or both
No-one knows according to Halopedian.
Unless someone has uncovered a brand new piece of fiction stating otherwise, Echo is Spartan III’s. No word on Gauntlet.
Well, it could be either. It could be Spartan IIs who originally “washed out” and were re-deployed when they were able to recover. Otherwise, they could Spartan-IIs from Gamma company. I recall some teams from Gamma had been deployed before the events of Ghost of Onyx.
The only two possibilites I believe in are S-II Class II or Gamma Company