2). Weaver K series, Vortex Viper, Sightron SII
3). Leupy VXR, Leupy FXIII, Sightron SII Big Sky, Zeiss Conquest (original)
4). Leupy VX6, Zeiss Conquest DL and HD5, Swarovski Z3
5). Swarovski Z6, Leica ER, S&B Summit, Zeiss Diavari, Nightforce NXS
Above only based on my personal use and / or ownership.