Radcliffe is a subset of Harvard. Those getting a degree from Radcliffe actually get a degree that says “Harvard” on it.
It used to be a separate college within Harvard. Now all it is is a college in name, offering a couple of feminist and IIRC publishing programs in the year.
There is no more Radcliffe College in a meaningful sense.
Actually, I’m not even sure it’s still considered a college, rather than an institute or some such.