Wow! Some really interesting and exotic designs and styles.
I wonder how many of these actually provided some performance benefit. Most, I'd guess.
Of particular interest to me was the Cadillac/Olds "Batwing" model.
The article doesn't say much, (or anything) about the internal filter medium in any of the models written about, BUT I can relate an experience with one...
I owned a 1957 Cadillac Sedan deVille, with a 365ci, 300hp V8.
This engine (and engine bay) was so basic that it didn't even have a PCV valve, only a downward pointed vent tube. Its oil filter was a drop-in cartridge.
But my anecdote had to do with the Air Cleaner...
The first time that I went to inspect it, I thought "Man, this thing is HEAVY".
After lifting it clear of the engine, I tilted it, only a bit; and consequently covered myself in oil.
Needless to say, some loud epithets were emitted.
This was before I'd ordered and received the factory Owner's Manual, (from Rick Schnitzler in PA.)
So this was an "Oil Bath" air cleaner.
Live and learn, (in 10w 30w splendor.)