Tagging bus routes

I'm trying to tag a new bus route (which includes new stops) but I'm not sure which option is best. Looking at some of the current stops, there are multiple of them which have been tagged slightly different (see examples below).

Stop v1, Stop v2 & Stop v3

I guess my question is whether or not I should be creating the node on the road always and if another should be created when there is a larger stop/platform (like the examples)

side note: I created a new bus route as a relation but when trying to add it to other stops on the route it doesn't appear (I've uploaded the changes).