Post below if why you want the northern line on Train sim world 2, My Suggestion because it has ATO (Abit similar to the jubilee because the jubilee used the CBTC System and the northern line uses the quite the same) it has the deepest tube station. Picture below of the 1995 stock:
3 isn't too many. Adding them in replies is more disruptive as it means the suggestion is split up too much
You can actually do is edit to add more information however there are limits to this it's 5 videos 40000 words and 20 pictures. Gameplay Wise resemble the Haputstrecke München Augsburg S-Bahn LZB ATO Level 2 because you are going to have another train right behind you.