The CRL is the common rank list. Yes it is the same as the overall rank. It consists of all the candidates (of all the categories and General).

For the General category, only the CRL is considered while for the rest both the reserved category list and CRL are considered.

CRL is Common Rank List which includes All the students who had given the exam and qualified irrespective of any sort of Reservation. There are many rank lists like OBC Rank List, SC Rank List, ST-PwD Rank List with different Ranks. General Non PwD students get just One Rank in CRL whereas others are alotted according to Reservation and may have more then one rank.

It is calculated by putting the composite scores of all the candidates in an ascending order.