You would have to have a mixer for this, as you can hardly define two USB inputs as a source at the same time. However, I have not tested it. I only have one. By the way: The connection of the Trust GXT 252 Emita is not USB-C!
The microphone has a conventional USB connection, which can be connected to a computer. However, in my opinion, the connection is not suitable for Lightning / iPhone. The microphone works wonderfully with the PC and e.g. MS Teams, but only via cable and not via Bluetooth.
According to the manufacturer, this microphone is compatible with all laptops and PCs. Therefore, it should be compatible with your Mac as long as you have a USB port to connect it to.
E jo, krass dini Frag zum Produkt, voll de hamer!
What exactly is your question?
Please report such things to the help centre and write only questions about the product in the future.
THANKS.