@GMANCRX 

If you look at the specs and the emulator for the AXE5400 it has three bands in the wifi settings for the wifi 2.4, 5, and 6 plus the guest networks. There may be more routers. 

go to the tp link web site for that router, select support and use the emulator.

  @GMANCRX Are you sure its the iPhone 14 because that phone doesn't support 6GHZ band.

  @ArcherC8 Thank you, I certainly appreciate your input 8^)

However, the AXE5400 is WiFi 6E. (axE5400)
The iPhone 14 is WiFi 6 compatible NOT WiFi 6E.

Also, the emulator was extremely helpful - I didn't know the emulator was on TP-Link's site. Thanks AGAIN 8^)

I just assumed that 6E was backwards compatible ... Nope!
This was my undoing.

EDIT: FYI TP-Link does NOT offer any WiFi 6 routers which allow WiFi 6 settings to be independently controlled.

  @GMANCRX 

First google "what is wifi 6" and page to the intel site and read to understand what wifi 6 is.

I think you are looking for a tri band router such as the tp link ax3200 tri band router.

it has one 2.4 and two 5 GHz bands. If you turn off smart connect, you have three separate bands to put your devices on provided you use different ssids. You can put one device on one band and the rest of the devices  on the other two bands. 2.4 tends to get more distance and the 5 gets more speed. 
 

wifi 6e introduced a new 6 GHz band which very few devices can currently connect to.