Мы в компании LabelMe придерживаемся основной системы классов для NER-разметки:
PERSON - People, including fictional.
NORP - Nationalities or religious or political groups.
FAC - Buildings, airports, highways, bridges, etc.
ORG - Companies, agencies, institutions, etc.
GPE - Countries, cities, states.
LOC - Non-GPE locations, mountain ranges, bodies of water.
PRODUCT - Objects, vehicles, foods, etc. (Not services.)
EVENT - Named hurricanes, battles, wars, sports events, etc.
WORK_OF_ART - Titles of books, songs, etc.
LAW - Named documents made into laws.
LANGUAGE - Any named language.
DATE - Absolute or relative dates or periods.
TIME - Times smaller than a day.
PERCENT - Percentage, including "%".
MONEY - Monetary values, including unit.
QUANTITY - Measurements, as of weight or distance.
ORDINAL - "first", "second", etc.
CARDINAL - Numerals that do not fall under another type.
Однако, важно понимать, что под каждую отдельную задачу в приоритет становятся лишь некоторые сущности. Подробнее о NER-разметке можно почитать
тут.