earlier only HWH, SDAH, PNBE raj were with ER and BCT, August Kranti Raj, ADI Raj were with WR. Later PNBE Raj went with ECR after ECR was carved out of ER.
Rest all Rajdhanis were with NR.
Last year SBC Rajdhani was transferred to SWR and BBS Rajdhani was transferred to ECoR two years back.