Who were Artemis huntresses?

According to Callimachus:

Sixty daughters of Okeanos (Okeanines)

Twenty Nymphai of Amnisos for handmaidens

By name, we know the name of these core six out of eighty:

Hyale

Krokale

Nephele

Phiale

Psekas

Rhanis

My answer: They are actually just anyone who wants to join. But they need to swear to Lady Artemis that they will ward off men forever. They will be immortal except if they fall in battle. They can be mortals, demigods, or just about anyone.