You don't mention how many 5Ghz devices you have so I guess we should force that answer out of you by suggesting that you change the 5Ghz SSID. 
Perhaps understanding and fixing the issue of why the RPi 4B doesn't seamlessly connect to 2.4Ghz would be beneficial.
I was thinking the same thing just yesterday. I will have to give a a try this week.
Change the SSID of the 2. add 24 after the name of the 2.4ghz and 5 after the 5ghz ssid... then just use the ssid of the 5ghz in the wpasupplicant file
there is a known issue with the Pi4 and the 2.4GHz wifi. If you havent disabled the HDMI, you need to force it to a lower than 4K resolution or it interferes with the 2.4g wifi
Thanks for the suggestion on renaming Both of my channels. But as stated before I am not redoing my entire network for 1 device. My printers are Less than 10 feet from my Wired Rack I will hard wire them before I Rename my 2.4 channel.