These are very interesting guns. S&W based them on the patents of a Belgian designer named Charles Clement, mainly because they couldn't come up with any else useful that didn't violate John Brown's patents. That was a universal problem in the manufacture of early automatic pistols.
The basic Clement design worked fine for 25 ACP and for 5mm Clement (aka "5mm Charola-Anitua"), but it was inadequate for anything like 32 ACP, which includes 35 S&W. Clement made only a very small number of 32's himself.
An excellent gun writer named Donald Simmons did a very thorough article about the S&W 35 in the 1976 Gun Digest Annual. If you want to know every variation your gun might possess, I recommend it highly. Copies of that book are available on Ebay for around $10. I assume it is also in the Gun Digest CD collection, but that's about $70. There may have been some new things learned about the 35's since 1976, but Simmon's article should still be a very good start, and is very clear and well organized.
Ed Buffaloe has a very long, thorough, and well illustrated article about Clement pistols on his Unblinking Eye website; he had help from a very knowledgable collector named Bill Chase. There is a paragraph or so at the very end about the S&W 35. It's here:
https://unblinkingeye.com/Guns/Clement/clement.html