I have to admit that the Litages are charming, a wonderful purchase, congratulations.
BH always distributes them with Suntour (BH was also a Suntour distributor for Spain). I seem to remember that they could be purchased with XCE or XC Comp.
The two I got came with XCE, but they already had many Shimano components.
I got an XC Comp in great condition to build it with it, but since I made the Look Mi-90 with XC Pro last month, it seemed like a lot of bikes with Suntour. I also got a Look Mi-800R, and it seems fun to put the Suntour XC Comp on it.
I then thought that I'd never seen a Litage with Campy, not even the Bianchi NTHs...