To this particular point, https://en.wikipedia.org/wiki/Spartiate would seem to suggest (admittedly poorly cited) that there was in fact a distinction made within Spartan society between free and enslaved Spartans.
The only reference it sources is confusingly Xenophon, who you have admonished others for not reading - I confess I haven't myself, so will do some digging!
The only reference it sources is confusingly Xenophon, who you have admonished others for not reading - I confess I haven't myself, so will do some digging!