Win 88 and BLR, have real 'bolts' that lock up just like a bolt gun, chambered in .308Win and such. But some folks might not consider these 'real' leverguns.
Savage 99 - .308 Win, etc.
Win 1895, .270, .30-06, etc. 50,000CUP class but a rear-lockup so you might get a little case stretch.
Win "Big Bore" - look at the .307 & .356 cartridge specs, these are pretty hot also.
I would put the modern 1886 next, with good steel it is pretty stout. Heck it was handling 40,000CUP loads a century ago.
Marlin 'modern' 1895 (ie Guide Gun). While it is pretty strong, I think if you look at the lockup on the 1886, with equivalent steel, the 86 has more area on the locking lugs.
Then you get the rest.... 'standard' Win 94, Marlin 336, etc.
Actually if you think about all the lever guns and cartridges that have been out over the years, there are some really potent combinations, and the lever guns should not be classified as 'weak' in general.
Just my opinions...