As a matter of fact I am working on a Morris Chair...
Yes I do still do flat work.
It has a matching set of inlays based off of designs by Harvey Eliis. They are not copies but I used elements from the originals to make my own design. I created a white oak leaf motif on each of the middle side slats of the chair and have a twin leaf design motif on the front stretcher. This work is not completed .. maybe 2 / 3rds.
The inlays you post above have more of a federal feel which is far more intricate and time consuming than what I am doing with my chair. I could do that type of work but it takes a very long time to complete so I try to find a a balance.
You are correct in that the work in your post do appeal to me and I had not seen then before so thanks for sharing.
Everything is better with inlay or marquetry!