There are many different types of keycap profiles available in the market, including DSA and MT3, etc. However, the most popular among all is the cherry and OEM profiles. Their popularity falls behind certain features relating to these two profiles. Both of these keycap profiles are aggressively sculpted and are very receptive. However, amongst the two, you are more likely to come across the OEM profile if you are out on a customized keycap hunt. The cherry keycaps are a lot harder to find.