There is a single Kenwood XML file that covers most Kenwood radios when using RigCat. The reason is that Kenwood was a bit more forward looking when they designed their digital interface, and designed all their radios (except the 590 and 990, and perhaps some of others) to adhere to the same computer command interface. Kenwood's computer command manual applies to a great number of models.
If you select Rig Control under the FLDIGI Configure menu, and then select the Hamlib tab, you'll find a Kenwood TS-2000 (Beta) entry in the menu list. I'd give that a try. If that has issues, you can locate the generic XML file for the bulk of Kenwood models (which has no model designator in the filename) and use that with RigCat. In both cases, you need to select the serial device in the Device pop-up menu, with the proper baud rate and stop bits, and then click initialize.