This! Linda Perry is iconic. Her and Christina worked well together as you can tell with the success of Stripped and Back to Basics (ugh wish she would have extended this era)Who lied to you and said Christina was known for her pen game? You mention Stripped but Matt Morris and Linda Perry carried that album with their pen game with Alicia Keys tossing in Impossible which she wrote and produced solely.
Xtina pen game is mostly autobiographical (centerd on hardships, personal growth, inspiration)
Mariah is more pop references in pop culture and catch phrase heavey( Bobby Womack, Wendy interview, )
So they’re both great in a their own way
I like that Mariah songs are actually clap backs or pre clap backs (Obsessed)
Though Christina has a few clapbacks ( Circles, Cant Hold Us Down, Best of Me, Fighter) most of her material that she rights are about abuse and breaking free of that abuse . ( Oh Mother, Im Ok, Birds of Prey, Empty Words, You Lost Me, stronger than Ever)
And of course “I will Be”