i was in Malaga last week and the name-Tag include the number of lines.
look at https://www.openstreetmap.org/node/2897394537
in my opinion and the wiki-definition only the station-name will be use like tag-value.
compare - in bustation-names you even not list the lines-numbers!
what is your opinion?
please post discussion-result in englisch!
regards Jan from Germany
Mapper in Nerja