are there any online resources that talk about the different lever actions?

[Mr. Friendly]

it looks like there's a good dozen lever actions starting from the 60's going up all the way to the '94 (from the 1800's). I'm curious to know the differences and what the pros / cons between them are.

 

[shooter33]

Hickok45 on youtube has a video covering a good amount maybe all of the lever guns from winchester. Not sure myself on all the different levers but I found it an interesting video.

The video is just titled Winchester leverguns.

 

[just having some fun]

Very complicated question with multiple answers

Levers
Magazine and tube fed

Mag fed / side loading gate / tube loading gate .... Henry now has a side loading gate with tube loading gate

Side eject / top eject / angled eject

rimfire -Rimless center fire - and Rimed center fire

Pistol cals
med Cals
Magnum Cals or the big boys
long action cals / short action cals

so the browing BLR is a mag fed
henry has a bunch of options
Savage had a bunch of options ..... No longer made
Winchester 92/ 94 all side loading / tube fed .... pistol . rimed . rimless etc
Winchester 88 mag fed
Marlin all side loading / tube fed .... pistol . rimed . rimless etc
and a few others

and some others that are copies

and it depends on what cal you are interested in

 

[tactical lever]

Check out the Youtube channel USOG. Found him recently. He seems to be a gunsmith who has a sizeable collection, and compares and shows quite a few guns. His videos sometimes drag a little for me, but he's fairly knowledgeable and goes into a bit of detail. Likely he'll have what you're looking for, as I've seen a couple of his videos where he'll detail how they lock up, features and what he likes about them.