What is the difference between supportedBandCombinationList and supportedBandwidthCombinationSet?

Hello Experts.
What is the difference between supportedBandCombinationList and supportedBandwidthCombinationSet. Is this last one only to SA mode?
In this above case, what does it means these two parts?

Bandwidth is more of total IBW of all band supported say 100, 200, 400 MHz bandwidth and it specifies the total MIMO layers, say 12-20 layers put together.

Based UE, network also aligns with total BW supported by a particular UE band combination.