for me
(going purely based off of my itunes library excluding artist that ATRL rarely post about),
a) Faves that have built a great Catalog: Janet, Mariah, Madonna, Britney, Rihanna, Alicia keys, Pink, Mary J Blige, Toni braxton, Lil kim, Missy, Aailyah, usher, Michael jackson, The black eyed peas
Have had a lot of hits not quite a catalog artist yet/ever: Katy, Bruno, Ashanti, Kesha, Paula adbul, george michael, cyndi lauper, Drake, Adele, Kelly clarkson, T.I., Nelly, JLO, Ciara, Eve, Chris brown, Nicki, Pitbull, flo rida, Ne yo, Lauryn hill unfortunately
,
b) Not my faves but even still: Timberlake, Beyonce (for r&b), Jay z (for rap), Maroon 5, Lil wayne, Kanye, Eminem
c) One more era: Katy, gaga, Bruno, Drake, Xtina, Miley, Ed sheeran
one or two more eras: Bieber, Adele, Nelly furtado, wiz khalifa