Is Vulkan the default API for any platform except a subset of the newest Android devices? By default, pretty much every gaming platform has it's own proprietar

Is Vulkan the default API for any platform except a subset of the newest Android devices? By default, pretty much every gaming platform has it's own proprietary graphics tech. we've got Metal on Macs and iOS, DirectX on Windows and XBox, and Gnmx on Playstation.