Blynk’s Tiles are seemingly more a precursor to the commercial application side of Blynk, as seems your number of needed devices? If so you might ask over on that side for further options.
Otherwise you should be able to use Device Selector with “normal” widgets/tabs, or even coding Blynk Bridges or API options for your multi-device needs?
We will leave this topic here in case someone can come up with alternate suggestions. EDIT - or we will just close this one and send them to your new topic 
Creating multiple “Virtual Devices” on a single physical device