It's too easy to over analyze suppressors to the point of inaction. I recommend you dive in and try it. Start with an inexpensive 22LR suppressor or go whole hog and buy an integrally suppressed 22LR pistol.
In 2010, I moved to Missouri with the plan of buying at least 3 suppressors. It took me 10 years to finally pull the trigger on 2 of them. At the time I 1st started looking, it seemed trusts were the way to go. Back then that required getting a lawyer involved, who was familiar with gun trusts. In Missouri, the Lawyer who helped draft our law on suppressors was the go to guy for gun trusts. Problem was he wanted $500 to set up a trust.
It was easier for me to not buy a suppressor than to deal will the trust, finger prints, filling out & processing the paperwork on the suppressor ($200 tax stamp), and figuring out which suppressor I wanted.
In 2020 I finally pulled the trigger on 2 suppressors. Instead of spending hours and hours on more futile research, I asked the shop owners what they recommended and bought 2 from them. I wanted 1 for 9mm and 1 for 308 and below. The shop I used has the Silencer Shop Kiosk. The paperwork was simple on that Kiosk. The Kiosk even takes your finger prints.
Working overseas as a contractor for the DOD, my Fingerprints and DNA are already in "the system." The fingerprint reader on the Kiosk gives you ratings on your fingerprints. I got good ratings on my 50% of my fingerprints. The others were rated bad (or poor or some such) but I said screw and submitted them as is. I did my paperwork as an individual. It was a simple easy process.
It took almost a full year to get my stamps approved.
Hindsight being 20/20, buying suppressors from a shop that has an indoor range probably would've been better. Most shops that have a range will let you visit (shoot) your suppressors on their range while you wait for your approval. A year is a long time to wait and I probably should've bought another 22LR suppressor while I waited for the 1st two. Oh well.