BL the classes you list are SASS, so I think your to be involved in that discipline....
However, I'll list NCOWS three & four gun Pistoleer which is a close fit... (except for your Shotgun)
Men’s and Women’s Four Gun Pistoleer: Shooter uses two pistols, one shotgun, and one pistol caliber rifle. Shooters are restricted
to the use of percussion revolvers, pre-1873 percussion or original/authentic reproductions of rimfire cartridge pocket pistols, exposed
hammer double-barreled shotguns (percussion or cartridge) and reproduction or original pre-1873 pistol-caliber repeating rifles (e.g.
1860 Henry, Spencer, 1866 Winchester, etc.) Shooters must shoot black powder or approved black powder substitute in all firearms
except those chambered for rimfire cartridges. Pistols and revolvers must be shot one-handed. Pistoleer shooters will shoot the same
course of fire as the other competitors except that in a stage requiring more than two shotgun rounds the Pistoleer shooter would not
be required to shoot the extra rounds.
Men’s and Women’s Three Gun Pistoleer: Shooter uses two pistols and one pistol caliber rifle. Shooters are restricted to the use of
percussion revolvers, pre-1873 percussion or original/authentic reproductions of rimfire cartridge pocket pistols, and reproduction or
original pre-1873 pistol-caliber repeating rifles (e.g. 1860 Henry, Spencer, 1866 Winchester, etc.) Shooters must shoot black powder
or approved black powder substitute in all firearms except those chambered for rimfire cartridges. Pistols and revolvers must be shot
one-handed.