For law, which of these unis is most reputable with employers?

Could you possibly rank them in order: york, Lancaster, Warwick, Manchester, Newcastle or Nottingham

There is no one ranking system that will tell you which unis are better. There are lots of league tables and personally I like the complete university guide but none of the tables are perfect since what they are measuring may not be what is important to you.

https://www.thecompleteuniversityguide.co.uk/league-tables/rankings?s=law

If you ask 5 different people on the Law forum you will probably get 5 different replies so my ranking will not be the same as another persons. I would put York first mainly for the lovely city, whereas many other people would put Nottingham first due to its higher position in most league tables and it being a bigger/livelier/more diverse city.

They are all respectable unis perfectly good enough for a career in Law so just pick the ones you like best