Ellsbury swings a U47, 33.5/30.5 Ash. When he came to New York, Louisville whipped him up his own model number, JE47, like Rawlings has done, too.
He hasn’t been swinging it lately, but Ellsbury has his own custom model Marucci, the JE2 in that pretty brown finish with gold labels. From Marucci: Ellsbury swings a bat that derived off of Dan Ugglas model (DU26). The DU26 is a slight variation of the KA29 (Kurt Ainsworth) one of the original Marucci models. He swings a 33.5/30.5 cup. He also has a custom brown finish.
You can customize an Ash U47 just like Ellsbury’s at the link.