There are ancient-era clan names called Uji-na (氏名?) or Honsei (本姓?).
Gempeitōkitsu (源平藤橘?), 4 noble clans of Japan:
From the late ancient era onward, the family name (Myōji/苗字 or 名字) had been commonly used by samurai to denote their family line instead of the name of the ancient clan that the family line belongs to (uji-na/氏名 or honsei/本姓), which was used only in the official records in the Imperial court. Kuge families also had used their family name (Kamei/家名) for the same purpose. Each of samurai families is called "[family name] clan (氏)" as follows and they must not be confused with ancient clan names:
Sacerdotal clans:
Ryukyuan people are not Yamato people, but the Ryukyu Islands have been part of Japan since 1879.
Ryukyuan dynasties: