It's certainly a rarity for all 3 devices to suffer the same anomaly at the same time. I think you'd have better odds winning the lottery
πAnyway, try the following on all 3 devices
1) Cache partition wipe
Plug into a working PC or laptop or other Samsung device
https://www.samsung.com/uk/support/mobile-devices/how-do-i-clear-the-cache-on-my-device/2) Hard reset
With the phone powered up, Hold Volume down and Power buttons simultaneously for 10 seconds. Screen will go off. Continue to hold buttons until phone vibrates and Samsung logo appears. Release buttons. Phone will reboot. Once done, please try charging again.
https://www.samsung.com/uk/support/mobile-devices/my-galaxy-smartphone-has-frozen-how-do-i-restart-i...3) Safe mode
To rule out any 3rd party app that you may have all downloaded, try booting to safe mode and try charging again
To get to Safe Mode - Long press Power button, long press Power off icon, tap Safe mode icon. (When booted into Safe mode you may need to turn off flight mode as it sometimes enables itself). Monitor your devices behaviour. If the issue is fixed then you know it's one of your 3rd party apps or customisations that were the culprit. It's up to you to determine which one by a process of elimination.