Repeated kernel panic on 2019 MacBook Pro

I’ve been having a very strange problem with my computer. Two to three times a week, and more often recently, the computer becomes unresponsive for a few seconds, then shuts down. I think this is a kernel panic, but I don’t get the normal panic message. I have tried everything from reinstalling the operating system to getting the logic board replaced by Apple. I have no external devices connected like a display or keyboard. System information shows no kernel extensions installed.

Computer details: 2019 MacBook Pro 15" with 2.4 GHz Octa-Core Intel i9, 32 GB RAM, and Radeon Pro 555X. Running macOS Catalina 10.15.6.

Panic log was too long to fit, so I put four of them (panic-full-xxxx.ips) here, here, here, and here.