I think LinkShades may be exactly what you are looking for… https://www.linkshades.com/ . We have several sets of these and have been pleased with them. They are WiFi controlled, but they also integrate with Alexa, SmartThings, Google Home and IFTTT. You can send trigger commands via IFTTT to control a single blind or a whole group of blinds. For instance, I have 4 blinds in our master bedroom that all raise together at 9:00am and then lower at 9:00pm via an IFTTT scheduler. They all begin precisely moving at the exact same time… Pretty impressive!
They include a wired controller that mounts on the window sill so that you can manually raise or lower them (push button), and you can stop them in any position or program them to stop in any position. The blinds are powered by plugging them into a regular 120 volt outlet.
They have a mobile App that works decent too, and the mobile app is updated if you manually position the blinds. You can also set up schedules within the app.
The blinds are packaged as a ready solution and available in most popular window sizes. You can mount them either inside the window or above/outside the window.
The blinds we have are all blackouts and range in size from 30" x 72" all the way up to a 96" x 96", which is the largest they make. I’ve bought some direct from their website and some through their Amazon store. I prefer to buy through the Amazon store for the Prime shipping and no hassle return policy in case something goes wrong. (We personally own an Amazon Prime certified distribution center, so I can attest to the high standards that Amazon holds its Prime merchants to.)
In my opinion they are reasonably priced for what you get (around $250 for a 72" x 72" blackout shade) and installation is simple and straight forward.
Good luck and hope this helps!