So you are looking for a Bluetooth keyboard that types like a typewriter? The lofree keyboard has you covered. It has Gateron switches to sound like a typewriter. You can use this keyboard with Windows, Macs, iOS, and Android devices. lofree has a wired and Bluetooth mode. It comes with round spherical keycaps.
This keyboard is compact and portable. You can pair up to 3 devices and switch between them easily. The auto-sleep mode prolongs battery life.