USB Keyboard input to Arduino Board?

I would like to connect a standard computer USB keyboard to an Arduino supported board (particularly interested in NODE_MCU, Pro-Micro, and RPi Pico W), and have the Arduino board read input from the USB keyboard.

One use case would be to enter WiFi SSD and password, and/or other configuration data.

I see where the Arduino is used to simulate a keyboard to talk to a computer, but that's not what I want. I just want to input keystrokes to be read and acted upon by the stand-alone Arduino board. Where can I find the libraries and examples for this? Sorry if this is an obvious question, but I got lost in the terminology between taking input from an external USB keyboard, and simulating a keyboard.

Another option for the Pico W might be a universal Bluetooth keyboard? Can I connect one of those to a Pico W, and read and act upon input keystrokes?

You can certainly do this with an old PS/2 keyboard, see library PS2Keyboard in the library manager. For the USB approach, I can't help you.