The FEinwerkbau 600 (601-603) series were probably the most popular and longest around in championship points. Anschutz made a ver well respected model called the Super Air (2001 and 2002), Steyr LG10, prior to that there were the Walther LGR LGM1 and LGM2. There was a Hammerli but it had supposed reliabilty issues with the loading tap, never seen one myself though. There was also the Gamo SuperMatch, they worked well and were comparatively cheap but you cannot buy seals for them for love nor money any more, they used a double piston arrangement that nobody else used and no other seals will fit. They will all become wall hangers if there are any still actually holding air.
I beleive there were some of Eastern European origin made possibly by Aeron (again I haven't seen one) and possibly Baikal (Russian) as they made the IZH 40M pistols known as Izzy's, it certainly wouldn't surprise me if they alos made a rifle.