It is very unlikely that you will find a library that does "everything" with "every display".
UTFT supports several popular displays. It does not support every popular display.
It is very simple to adapt UTFT for yourself. e.g. add support for an ILI9341_8.
Or any other controller with any other interface.
Mr Karlsen may or may not be interested.
What do you want to do with your Template class?
David.