At the recent festival, I saw fibre from these breeds of sheep (plus yak and camel), which were new to me:
Gotland in grey
Falkland (not the country; the country of origin was Great Britain)
Navajo-churro in grey and other shades
I also discovered that my interest in obscure and diverse fibres is not sufficiently strong enough to overcome my disinclination to buy coarse fibre.