OP you should really dig deeper to find the best showings for these ladies’ voices. It’s not necessarily the first things that pop out to you.
Mariah’s best vocals..
http
s://youtu.be/Z8jKPS9x3H0
the chameleon tone.. her use of her massive range allows her to explore so many diff colors and textures.. great at vowel manipulation.. she’s a vocal technician and strategist! she has a way to layering her vocals .. alot of unorthodox progressions and her fluidity jus weaving in and out the line is peerless. she’s a bit shy on stage in prime soI don’t really think she gave all she had when she was at her best. Still she’s a 9! (i had to take off point 5 cause her intonation was shaky live and she didn’t always have accuracy timing some of her crazy runs). still a god-tier vocalist. Not as soulful as I like for my favorites, but this is just objective traits..