I don't try to pick up range brass unless it is brand new and a shooter is leaving it behind. I also make sure it has a reasonable headstamp and the proper primer size (LPP for .45 ACP). I have 10 gallons of well used .45 ACP brass so I'm not hunting for any more.
We got a donation of a couple of thousand .40 S&W brass, Federal, and shot through Sigs. That was a decent start.
I didn't have 9mm when I started loading for my wife's P365 so I bought a couple of thousand Starline.
For rifle, I use either Winchester for M1As or Lapua for bolt guns. New brass, store bought. I haven't found reclaimed machine gun brass to be an acceptable way to load for the M1As.
I tumble with walnut media and Dillon Polish in a large Dillon Vibratory cleaner. I have also used a Thumbler's Tumbler but it is too small. When the wife and grandson shoot Action Pistol along with me, we're going to blow up 1000 rounds or so in a single outing. It seems like a lot but with an open and hot range and only 3 shooters, the biggest time sink is reloading mags. We can empty them pretty darn quick.
Three 12-round .40 mags - 36 rounds every time up and they're empty in less than a minute. Times 3 shooters!
If I were starting out and considering the crap brass available on the ground, I would buy Starline. Maybe only 1000 at a time to help with cash flow but that brass is going to last for a very long time. I have brass I picked up off the ground (before I knew better and long before crap brass became common) back in the early '80s. Still works fine.
Don't overthink the problem and don't always look for the cheap way out. A lot of our .40 brass came from store bought Federal before we got the huge donation. We bought Federal for the brass instead of Blazer for the price.
If you ask the opinions of 3 reloaders on any given topic, you will get at least 4 different replies. This reloading thing isn't brain surgery, don't overthink it!
I have the ABCs and I didn't find it overly useful. It is very dated and I prefer Hornady (which I also have on Kindle) and Speer. Sierra for rifle...
I pick up my own brass so I don't worry about headstamp. Where I shoot, there is a $150 clean-up fee if you don't police the range. As a result, it's pretty hard to find brass laying on the ground.
So, since I only pick up my own brass, I just sort by caliber.
https://www.midwayusa.com/media-sifters/br?cid=19909&targetLocation=/_/N-0+4294959923+19909
I also try to tumble by caliber. There's nothing worse than a 9mm jammed into a .40 jammed into a .45. The sifters don't work anywhere near as well as the sales literature says.