Liberal feminism — actually neoliberal Thatcherite feminism now with a postmodern twist — is identity politics.
Radical feminism is not identity but CLASS politics.
In CLASS politics, there are 3 big axes of exploitation based on position wrt one’s labour and resources:
Economic class, where workers sell their labour and the fruits of that are profit taken by the ownership class.
Sex class, where women are the means of reproducing the necessary workers and the fruits of whose sexual, domestic, and reproductive labour are taken by men.
Race/ethnicity class, where, depending on location, people of a certain race or ethnicity are maintained as a reserve pool of labour to be employed or not depending upon need and whose land or natural resources are taken or colonized by those of the dominant race/ethnicity.
Identity politics are neoliberal because they give primacy to the individual over the class and the marketplace over the commonweal, and they are postmodern because they privilege subjective experience over material reality.
Further, identity politics conflates various hierarchies into one word “privilege” whereas class politics teases apart the difference between exploitation/oppression, discrimination, and disadvantage.