One more possibility I forgot to mention. USB3 is a known source of problems as well, even though it’s not “radio”. See for example: USB3.0 Radio Frequency Interference
LANs also now run at such high speeds that the wires can act as antennas and they become RF transmitters. A “1GHz Ethernet” is a 1GHz transmitter.
Your Ethernet and USB cables can be sources of RF interference, even though they don’t look like radio devices.
Good RF engineering practice motivates keeping equipment and wiring well separated and appropriately shielded and/or grounded. Good housekeeping motivates putting all those ugly boxes and wires in one place and out of sight. Often you can’t have both…