Eerie that a theme I've been working on looks too similar to this one; now have to make some changes. At least mine has a sidebar (plus an off canvas option). Good that it's built for Gutenberg though; a decision I decided to make my themes GB ready for every theme release.

But on that subject of no sidebar...not really a good idea and would be interested to hear why not. Perhaps an option to enable/disable one. Aside from that, the Twenty Nineteen theme appears to be for personal bloggers.

Odd we won't see a Twenty Eighteen theme, but the year is almost gone now, so I guess it makes sense to put out a Twenty Nineteen.