Haworthia species. Lots of indirect light, keep it above 50F, water when dry, porous soil. I don't know the particular species (there are lots of other very cool species). It looks like it's ready for a repotting soon.

I looked through the Haworthia and Haworthiopsis pics on Llifle.com but didn't see one that looked like a match. However, I agree it is a Haworthia or something close. You asked how to best care for it but seems like you figured it out.

Edit: Actually, it looks a lot like Haworthia tortuosa to me but I'm not sure.

Thanks to both of you. I wonder if I should I repot it while it is flowering or does that matter. I am also wondering if I should separate it at the same time. It looks like there are 3 plants there. One looks to be leaning out quite a bit so should I pot that by itself?

It grows stacked - taller. Usually, more upright, so watch not to overwater. You can separate when repotting, but that will not stop plant from growing taller. Either bigger pot for all, or 3 separate pots (size of existing would be plenty for single plant). Flowers are quite insignificant - very small, on usually long stalk. You can keep it, or even cut off - your choice. I would use well draining mix.

Here is the link to site Poly mentioned: HAWORTHIA/ HAWORTHIOPSIS

Thanks Rina. You are always so helpful....