As maybe the only Swiss person on this board, I might be of help: The only other one with somewhat the same kind of international success was probably Rene Lasartesse, who was a fairly big deal in Europe and also fought in Japan and the USA, back in the 50s and up until the 80s.
Cesaros former tag team partner in Swiss Money Holding, Ares, came to the States with him as well and fought for a while in Chikara and other indies. He's retired now and married to Allison Danger, I think.
Oliver Carter, who's signed to NXT UK, is also Swiss with Ghanian roots.
But yeah, the Swiss wrestling scene was never that much of a big deal. There have always been one or two small promotions around, at the moment I can think of Swiss Wrestling Entertainment and the Wrestling Academy Rorbas. I think Cesaro got his start in the Swiss Wrestling Federation, which folded 2005.