Without a doubt, the schools you mentioned are among the best medical schools in the US.
Of those, WashU and UCSF are in the very, very top, Washington and Stanford in the top 10, and Baylor and Southwestern following closely.
I only have personal experience with WashU and Southwestern and can tell you they have some of the best organized and well funded MSTP programs in the nation. The research is also outstanding. Actually, you might find that a lot of Midwestern schools and their MSTP programs are especially good and 'cushy', as they know they have to compete for the best students with top schools on the coasts, and overcome their location.
So, if you like the Midwest, you cannot go wrong.
They are all very selective, with the selectivity approximately mimicking the rank. WashU has been called the most selective MSTP out there (and based on their numbers they are), but thankfully, they have many spots available.