Have access to a Machine shop to custom make solutions ?
26" wheel casual use , bikes with Mountain bike drive trains, to make hill easier have a Kickstand plate on the frame out of the factory..
If there is a desire to have a Center Mounted KS the Swiss Pletcher company
https://www.pletscher.ch/index.php/en/ makes more mounting adapter solutions .
Who Stocks them to buy on line? I have no Idea.