Like a Prayer sold much more than I'm Your Baby Tonight using the EAS method.

Whitney surely have best streaming stats of former big four divas even though she has less catalogue. Impressive

Whitney Houston’s Billboard 200 entries ranked by weeks in top 10 ( as of March 31 , 2024 ):

1. 48, Whitney Houston
2. 42, Bodyguard
3. 31, Whitney
4. 22, I’m Yours Baby Tonight
5. 9, Whitney: The Greatest Hits
6. 8, The Preacher's Wife
7. 4, I Look To You
8. 1, Just Whitney...

21, "Waiting To Exhale" , not included as her personal .

Total : 165 weeks ( 186 ) .

According to this magazine called New Straits Times, these are some of Whitney's album sales in Malaysia:
Whitney 37,000
I'm Your Baby Tonight 34,000
The Bodyguard OST 159,000
My Love Is Your Love 25,000

links:
https://books.google.cl/books?id=A65UAAAAIBAJ&pg=PA20&dq=whitney+houston+sold&article_id=2817,3292089&hl=es&sa=X&ved=2ahUKEwjfqra1p86DAxUaD7kGHaLqAXsQ6AF6BAgDEAI#v=onepage&q=whitney%20houston%20sold&f=false
https://books.google.cl/books?id=jchUAAAAIBAJ&pg=PA23&dq=Whitney+houston%27s+i%27m+your+baby+tonight&article_id=5036,3794081&hl=es&sa=X&ved=2ahUKEwjP_rvEq86DAxV_O7kGHV-UDUcQ6AF6BAgKEAI#v=onepage&q=Whitney%20housto n's%20i'm%20your%20baby%20tonight&f=false
https://books.google.cl/books?id=cnAWAAAAIBAJ&pg=PA21&dq=whitney+houston+sold&article_id=6190,2858336&hl=es&sa=X&ved=2ahUKEwj7hNv-p86DAxUlG7kGHTwlAhY4HhDoAXoECAUQAg#v=onepage&q=whitney%20houston%20sold&f=false
https://books.google.cl/books?id=WeoVAAAAIBAJ&pg=PA26&dq=whitney+houston+the+bodyguard+sold&article_id=6518,1831832&hl=es&sa=X&ved=2ahUKEwjPu6Ga39qDAxV1BrkGHWLYAZYQ6AF6BAgFEAI#v=onepage&q=whitney%20houston%20the%20bodyguard%20sold&f=false
Looking forward for an updated article hopefully soon!