Apple dmgs are signed, but not certified by Apple. 

    U.dmg - universal build on Apple M2 mini, should execute on all
            M1/M2/Intel machines

       MacOS 13.x
       MacOS 12.x
       MacOS 11.x
       MacOS 10.15
       MacOS 10.14
       MacOS 10.13

    LI.dmg - Intel x86_64 build on Lion 10.7.6, should execute on

       MacOS 10.13: High Sierra
       MacOS 10.12: Sierra- 2016.
       OS X 10.11: El Capitan- 2015.
       OS X 10.10: Yosemite-2014.
       OS X 10.9 Mavericks-2013.
       OS X 10.8 Mountain Lion- 2012.
       OS X 10.7 Lion- 2011.