In other words nobody once you eliminate the ones clinging to the cas craze.
Like I said in a generation. When the guys who grew up on the lone ranger are gone replaced by the sesame street Gen.
I come from the sesame street generation and have a pair of lever rifles at my disposal: a 22WRM Henry & a Model 81 BLR in 257 Roberts. Most of the guys who I know that are avid shooters have lever rifles made by anyone of the above. My dad is stuck on lever carbines, and the people I meet at the range more often than not have lever guns.
They are cheap, compact, found in a myriad of chamberings, carry more rounds than a bolt gun, fit great on the saddle/ATV scabbard, and are more than potent enough for 95% of hunting needs. Unless there comes aching for an oddball caliber or need for a powerful 375 H&H derivative, I don't see lever guns going anywhere in my lifetime. I don't have plans for any new lever rifles currently, but they are on the buy list if I come across a nice one in a good chambering. Plus, they make great first guns for kids.
As to the nature of the thread, there are two groups of American guns: sporting & military.
Sporting (from old to new):
Pennsylvania/Kentucky Rifle
Hawken Rifle
1863 Sharps
1874 Sharps
1885 Browning High Wall
1886 Winchester
1894 Winchester
Model 70 Winchester
Military (from old to new):
1763 Leger/1766 Charleville Smoothbore Musket
1795 Springfield Smoothbore Musket
1816 Harper's Ferry Smoothbore Musket
1841 Mississippi Percussion Rifled Musket
1861 Springfield Percussion Rifled Musket
1862 Sharps Breechloading Rifle/Carbine
1863 Springfield Rifled Musket
1864 Henry Rimfire Lever-action Repeating Rifle
1873 Springfield Trapdoor Breechloading Rifle
1894 Krag Bolt-action Repeating Rifle
1903 Springfield A3
1917 Browning Automatic Rifle A1
1919 Thompson SMG
1919 Browning HMG
1933 Browning M2 HMG
1936 M1 Garand
1959 M14
1963 M16
1984 M249 SAW
1994 M4 Carbine
2009 SCAR 16/17