You can certainly differentiate between different kits amongst a single brand.
For example, you might like the BTC's kits but not Pete's Dragons or you might like the black and gray Adidas but not the blue cheetah.
Not exhaustive, but some of the major players are:
1. Nike
2. Adidas
3. New Balance
4. Saucony
5. Tracksmith
6. Oiselle
7. Puma
8. Hoka
9. ON
10. Asics
11. Brooks