Connect Arduino with Wifi and than over USB to Computer

Hi,

I need help with a project. I want to connect up to 20 Arduinos to a Computer. My idea was that I have 1 "access point"(another arduino?) which collects the data of my 20 "clients" over wifi(~10kB/s per client). The access point it self than would transfer the data over USB (serial monitor?) to the computer.
I want to do it that way, as my Arduinos should/can not connect to the same network as the computer(work place). And the computer should still be able to use the "original" network for internet etc.
Do you have any ideas for an easy solution? I tried the ATWINC1500 modules but found out, that it is only possible to connect one client if in access mode.
Which modules would fit for my application?

Thank you for your help.

Where do you imagine an Arduino with 2k of memory is going to store 10kB/second from one other source, never mind 20 of them.

Use the PC as the access point.

...R