Hey Farmland,
I may be wrong, but I think the maximum case length for the standard 45-70 Government case is 2.105 inches, and I suspect the recommended trim to length is the 2.095 inches you mentioned.
I have no idea about Hornady LeverRevolution brass or whether it is intended for a different purpose or what, but the 2.035 inches you are getting sure is not right for a regular 45-70.
Now, having said that the brass you are reporting is shorter than a regular 45-70, that does not mean you could not safely use the shorter brass in a 45-70 rifle. As long as you are not loading at peak pressures, a shorter case length will not make a dangerous load. The shorter case length will mean that you will have to adjust your seating and crimping die to seat your bullet that much deeper.
This really isn't a big deal unless you have a lot of standard length 45-70 brass and just a box or so of the shorter brass. Then you would have to be changing your seating/crimping die each time you changed from one brass length to another. This can be a pain in the neck, and if you have enough standard length brass, it doesn't seem worth the effort to switch between the two.
When I first started reloading, I was reloading for a 30-40 Krag, and I only had one box of 30-40 Krag brass. Someone gave me about six boxes of 303 British brass, and I fire formed them to my Krag rifle. After that, I loaded all the 303 and 30-40 Krag brass the same way with jacketed bullets which were less than $4 a hundred back then. With the jacketed bullets, I had no need to crimp, so I was able to seat them in both types of cases without making any adjustment for depth. In other words, my oveall cartridge length was the same whether I was using a 303 British case or a 30-40 case. I never shot hot loads, and both cases shot to the same point of aim.
With the 45-70, however, you will most likely want to crimp your bullets, and that will require adjustments between different case lengths. If you can return the short cases and get standard ones, I would consider doing just that. As far as die sets go, I can assure you that RCBS, Lyman, Hornady, and probably most others will seat and crimp your 45-70 in either standard or shorter length. It is really a matter of convenience.
Best wishes,
Dave Wile