Hi,
Please forgive me if I have not understood your requirement(s) properly. By any chance, are you in need of a powered USB hub like this one?
https://www.alibaba.com/product-detail/RSHTECH-Usb-C-Hub-2024-5_1601297861584.html?spm=a2756.trade-list-buyer.0.0.3b4076e9YszYAd
There are tonnes of options available on almost all e-commerce sites. These hubs work with computers just fine (I have 4 nVME SSDs connected to that hub) but I am not sure if the same applies to smartphones as well. In case you decide to go for a USB hub, please go for a powered one. Otherwise, if any drive needs to draw more power, that drive may get disconnected.
Thanks, Mark

