This actually takes quite a bit of time to sort out. To get the RAWs, they need to go to Lightroom and check the file name of the RAW image, then go to the RAW folder and copy it for you. X15 and this will take some time, assuming they still have the RAWs easily available. It might be easier to just give you all of the RAW files but then you have storage and sharing issues. You might offer to compensate them for the effort, especially if it’s some time after completion of the shoot.
Imagine you did a shoot with anyone. They are surely going to be wearing branded clothing. You would have to blur out the brands for every shoot you did. That would be crazy.