Taylor did get into the top 10 on AAA for "exile", which had Bon Iver as a co-singer. She got a bit further on Mediabase than Billboard due to MB's AAA panel being more "commercial" than Billboard's. However she is not going to get into Alternative unless she evolves into something resembling Midwestern/Southern alt-rock - think The Black Keys, Cage The Elephant, Kings of Leon, etc. She is one of the biggest hitmakers in pop music history - the antithesis of Alternative. The format will not take her unless she makes a concerted effort to meet Alt at its level - and trying to pull a baroque pop thing like Panic! At The Disco's smash "High Hopes" won't make Alt budge either I think.
RTM asked me for my age, gender, and what city and state I live in (postal code as well). So it doesn't break things down by a racial angle but it does break things down by age, gender, and presumably location.
I know how well Willow went over when she tried - she blanked on Alternative last week. Bleachers, The Neighbourhood, and Saint Motel were the artists going for adds against her and they all got a noticeable amount of adds (especially Bleachers). At the same time MGK has basically cleared the Alt panel with "love race" so it's only a matter of time before he's contending for a #1 - and it's not a racial angle either as KennyHoopla has his own pop-punk banger "Hollywood Sucks" taking off like a rocket (in the wake of Estella having a decent amount of success). I have to wonder if there's a limit to how much of a celebrity one can be before Alternative will turn away - even if they make a song that is within Alternative's wheelhouse.