There are dozens of good keyboards, all depends on the type of feel you like in a keyboard. If you have not tried any keyboards then something middle ground like a keyboard with a Red switch would do, or get a Logitech one to match the mouse, the Prodigy G213 is not mechanical but has pretty good key feel and is not expensive if you are OK with the size https://www.amazon.com/Logitech-G21...words=logitech+keyboard&qid=1601302388&sr=8-5
There are dozens of good keyboards, all depends on the type of feel you like in a keyboard. If you have not tried any keyboards then something middle ground like a keyboard with a Red switch would do, or get a Logitech one to match the mouse, the Prodigy G213 is not mechanical but has pretty good key feel and is not expensive if you are OK with the size https://www.amazon.com/Logitech-G21...words=logitech+keyboard&qid=1601302388&sr=8-5
For a bit more you can get something with full rgb, and keep in mind you will be using the keyboard for a long time, so spending another 20,30, 40 on one is not really a lot for something that will be in use for years.