I think that, in general, parens should not be used in names. For each of these locations, I'd put the primary version by itself in the name field and the version you have in parens as an alt_name value.

I looked to see if there were ISO language codes for Acjachemen, Luiseño, or Tongva but apparently there are not. If there were, then the primary name should also be put in a name:isocode field.