There are plenty of well known, all instrumental, musicians these days. Almost certainly more than there've ever been. Most just don't show up on things like

There are plenty of well known, all instrumental, musicians these days. Almost certainly more than there've ever been. Most just don't show up on things like Billboard because that ceased being a representative way to track musical consumption a long time ago. There's an overwhelming amount of content now, across all mediums, and there's a lot of "dark matter" that isn't well represented in the mainstream. It's like when someone, who enjoys streaming television asks someone else what they're watching... Who knows. Could be a popular show on Netflix, could be a niche YouTube channel where a man slowly fixes a wooden boat by hand.