the EN version has genuinely terrible translations. there is absolutely zero consistency in differentiating 'single team' and 'whole field' in this version. words that have been used to refer to one are also used to refer to the other and it's really just one of the things i hate.

CN has a nicer and more consistent way of telling them apart. the words they use are literally "small team" and "big team" :'')

For your question, I have been informed that the Y and the +1 skill buffs the same single team. I didnt test them personally because my sasuke is already skilbroken to Y+2/+2 mystery. However, I did test Y+2, and you'd maybe like to know that this skill buffs the whole field, rather than a single team.

I think it's better that you don't hold "lineup" to a single meaning, because "lineup" has also been used to refer to field-wide buffs.it's just easier to memorize which barrier buffs which type of team.