I was having daily crashes on my MBP 16 2019 with no external devices connected. My IT suggested I do a NVRAM and SMC reset and then no more kernel panic for many days now. The panic I was getting was a watchdog triggered panic in kernel_task. I would never believe when they tell you to do the NVRAM and SMC reset but in this case it worked! Note that NVRAM and SMC reset are 2 different procedures to follow. Make sure to do them correctly based on the type of device that you have (if you have Touch ID and T2 security chip, etc)