Lubricants don't work the way most assume that they do:
ATF doesn't really do anything special for us in the firearms context. It will likely work but that's because nearly anything that doesn't gum the gun up will work. In firearms proper lubricants grab particulates, encapsulates them, and ultimately flows them away from working surfaces. Lube in guns just keeps the system working smoothly. It's not like your engine where the entire function of it is dependent upon a thin layer of oil acting as a hydrodynamic fluid wedge. It just keeps grit and particles from gagging the action and keeps the working parts sliding against each other predictably.
As machines go, it's a very simple system that doesn't challenge most lubricants. It's a laughable challenge compared to a combustion engine.
Because so few people actually know what the chart above represents, there's hardly any home-brew solutions that are going to actually provide any level of benefit to function.
All we are looking for is something that doesn't flash off at too low of a temperature, something that doesn't leave behind a gummy residue, and something that won't cause problems with the metallurgy of the gun. There are lubes and/or cleaners for automotive applications that have chlorinated esters in them which would be a pretty bad idea on most of our shotguns, for example, because chlorinated esters do not play well with aluminum and even some steel alloys. They cause corrosion and stress cracking so it would be a good idea to avoid those.
Trillions of dollars have been poured into researching how we can cope with friction and wear (these are two separate phenomena, by the way) over the history of the modern industrial age with the bulk of that money going into high demand applications that power civilization. Nobody is putting that kind of money into researching gun lube. Some government research exists, but it's usually been focused on a particular requirement.
Grease being seen as good for firearms application, for example, tends to come from the M1 Garand where the action being open to the elements and the need for an amphibious landing with a gun that has a big bucket under the action allowed water to float oil completely off the gun. Grease would at least keep some of the oil component on the gun and so it got the nod for lubricating the gun under those specific conditions. That's been taken to be gospel for everything ever since even though they don't really understand what problem they were attempting to solve.
Point being there's no magic formulation that's going to solve all your problems. You can be too clever by half like all those poor bastards who thought that dry graphite lubrication would work really well on the AR platform only to find it most certainly didn't (because they didn't understand what lubrication actually does in a firearm) AND promoted some pretty nasty caking that was more difficult to clean up.
Once you understand what lube is supposed to do on a firearm, you can free yourself from all the other nonsense.
We just need it to be there, to grab contaminants and either wrap them in a liquid ball bearing or get them away from the working parts to help the working parts move against each other without hinderance. That's it.
You don't need to season your gun like a cast iron skillet. You don't need "non-toxic" lube that isn't really and ends up rancidifying over time because bacteria like to eat it. You don't need magic lube or the special recipe some dude got from the knot of a tree after a magic gnome pointed at it, winked, and disappeared.
All you need is some, and some that doesn't suck out loud. So no rem-oil, no WD40 (useful for getting water off of-out of your gun, terrible if you just leave it there and don't carefully clean the gun), probably avoid the EEzox, etc. Apart from that, frequent application of something that's quick and easy is good. Using something like a needle oiler bottle keeps it from getting messy...but messy will work. It's just messy and usually the "messy" part ends up on the parts of the gun we're trying to have a firm hold on.