Update 2020-04-16:
Added shiny Braviary: adamant HA, jolly HA
Added shiny gmax Copperajah: adamant, adamant HA, brave
Added shiny Ditto (just because I can :D): mild, naughty HA
Added shiny Gengar (both gmax and normal): modest, timid HA (as of gen8, Gengar can have its HA, despite it being Cursed Body as well)
Added shiny Indeedee-M: bold HA, timid HA
Added shiny Passimian: adamant HA, jolly HA
Added shiny Sirfetch'd: adamant HA, jolly HA
Added shiny Snorlax (both gmax and normal): relaxed, relaxed HA, sassy HA, adamant, impish HA, careful, careful HA