@mattypenny Based on reports (read: complaints) from family members, most mechanical keyboards are quieter than these old typewriters. When it comes to mid-century typewriters there are varying levels of what they considered "quiet". Many manufacturers added felt padding and custom rubber washers to their machines to dampen things down, especially for companies that had dozens of machines in a typing pool which could be quite loud.

Alternately, I have heard stories of companies piping in typing noise into their workspaces as a means of creating both ambience as well as trying to help up the level of productivity—presumably as an aural form of "body doubling". I won't bother to mention the ever-growing ASMR space...