What types of inputs do you need? So far all I can find in Australia is 1 to many all HDMI. Worst case scenario you might need a bunch of speciality whatever to HDMI adaptors and feed them all into a HDMI switch.
Its for a family members small business where they have an event room they rent out from time to time. His partner pissed off the guy who did their AV setup, so now they are asking me.
So all three of these are AV Professional units, the Black Magic is a bit more live event/live venue focused. The TVOne is more conference room focused. The Analogway is kinda hybrid of the two but much more expensive.
USB as in USB-C?
If the display is HDMI in, you can get HDMI auto/priority switchers. IE, will switch to the highest active input.
Then get a USB-C cable to HDMI, and a plain HDMI cable for the other input.
That covers USBC & HDMI.