CR2:
N916SW (different from N916EV) seems to be a floater for UAX. It's in an unusual livery that appears to be patched SkyWest Charter.

CR5:
N718EV (floater) has been flying for Delta for some time
N513GJ (former N83EA) has moved from STL to CKB
N576GJ (former N521LR) has moved from STL to ROW

CR7:
N792SK has moved from TUS to FAT