There is a “lite” version, but it’s not sold separately, just a space saving option of the full version for people who don’t need all the toy stuff. That’s what I have on my laptop, just the core library (full version resides on my desktop).
it’s not cheap, but I don’t think it’s overpriced for what it is. And it sounds like it is exactly what you need: piano, rhodes, wurly, clav and assorted vintage digital keys. I really love the MKS-20 in there.
Here's a list of all the models they included: https://www.spectrasonics.net/products/keyscape/keyscape-models.php