All Maxim Gigabit Multimedia Serial Link (GMSL) parts are compatible with each other. However, there are some constraints.
If a serializer or deserializer has a feature that its companion does not, just disable that feature. For example, the MAX9275 does not support 6-bit CRC error-checking, but the MAX96706 does. You can still interface the MAX9275 with the MAX96706, but 6-bit CRC needs to be disabled in the MAX96706.
The amount of data input or output is constrained by the physical interface of the chip. In the mentioned case of the MAX96705 and MAX96706, the former is a 16-bit device and the latter is only a 14-bit device. If you choose to input 16 bits of parallel data to the serializer, you will only be able to read the first 14 of those bits in the deserializer, because the deserializer does not have a physical interface to output them. The GMSL protocol remains the same across all Maxim SerDes devices; it is the data interface that changes.