Let’s look at the list:
Ana: Necropolis/Anubis
Ashe: Route 66
Baptiste: The upcoming Havana map?
Bastion: Black Forest
Brig: none
D.va: Busan
Doomfist: none (Numbani?)
Genji: Hanamura/Nepal
Hanzo: Hanamura
Junkrat: Junkertown
Lucio: none (but let’s be honest, lucio players live in Ilios) (Estádio das Rãs is a map but it’s only in summer)
McCree: Route 66
Mei: Ecopoint: Antarctica/Lijiang Tower
Mercy: none
Moira: Oasis
Orisa: Numbani
Pharah: Anubis
Reaper: none (Hollywood, because he was born in LA apparently?)
Reinhardt: Eichenwalde
Roadhog: Junkertown
Soldier: 76: none
Sombra: Castillo
Symmetra: none
Torbjorn: none
Tracer: King’s Row
Widowmaker: Chateau Guillard/Paris
Winston: Horizon Lunar Colony/Watchpoint: Gibraltar
Wrecking Ball: Horizon Lunar Colony/Junkertown
Zarya: Volskaya Industries
Zenyatta: Nepal
Some fan favorites who have been in the game since the beginning still don’t have home maps.