The bed we recently bought was "mostly Japanese joinery" type construction. It was an absolute joy to assemble, which when I think about it is a very weird thing to say about a bed. But I've told several people this, so it must have had an effect on me.
I don't want to be thought of as shilling for a brand, but the brand I got is Thuma. Assembly instructions: https://www.thuma.co/pages/assembly-thebed-headboard
And a video: https://youtu.be/f89pdrHEkm8