Example TP Link is note at https://www.techspot.com/community/topics/how-to-limit-the-bandwidth-for-each-computer-on-a-wireless-network.193175/
The model is still for sale. There may be other routers that do this as well.
https://www.newegg.com/Product/Product.aspx?Item=N82E16833704128
How to create a network in which you can limiting internet speed for different user

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