Hi!
I’ll echo jules m and agree with that ranking. It’s a sound measurement of how unique/special/mind blowing each collection of art is. That said - OMG THIS IS FLORENCE. The whole place is mind-blowing and head-turning.
I almost hesitate to throw this out there, then, but I might just be tempted to replace the Pitti Palace with the Museo de Storie Naturale.
My extended family and I visited a few years ago and were blown away.
https://en.wikipedia.org/wiki/Museo_di_Storia_Naturale_di_Firenze
It’s a natural history museum, with gorgeous collections of specimens (from insects to plant life to mammals and reptiles and human skeletal remains, plus minerals, planetary stuff - it’s a LOT) and… a jaw-dropping collection of 18th century wax anatomical preparations in the Zoologia "La Specola” collection. https://www.atlasobscura.com/places/la-specola
None of us had ever seen anything like it before. We were, in a word, gobsmacked.
If you have time, I would check it out. It’s cray-mazing.