Musicality is taken by Liszt, almost entirely because of his piano sonata.
Sentimentality...I would actually hand this to Chopin.
Creativity easily goes to Liszt. His developments of harmony are incredible. I mean, basically inventing the Symphonic Poem? Writing Annees de Pelerinage? Definitely Liszt. I think Alkan was creative too, but to a lesser extent. To be honest, I don't know much about Alkan's works for solo piano outside of the 2 sets of etudes, the 3 grande etudes, the equisses, and the preludes. But I still think his reach wasn't as great as Liszt.