I see it exactly like Traumhaus. For example, in our case, the street front is designed much more beautifully and attractively, and not all four exterior walls are painted the same color.
Of course, not all houses in Germany are the same, but probably every second thread here features a gable roof, and the "city villas" all look the same except for the windows, square, with the upper and lower floors being the same size.
There was once a thread here where someone posted a link to an urbanization somewhere in Germany where these said villas were actually lined up side by side and one behind the other.
When I still lived in Germany, the term "city villas" as understood today did not exist, and they are not villas either, at least I understand something different by the term villa.
For example, with us, the upper and lower floors are usually not the same size, the lower floor always bigger, kitchen always by the terrace, etc. That, in my opinion, allows more freedom in interior design.
I often see here in the forum that someone has a large plot, >1000, yet a square or slightly rectangular two-story house is built at one end, which usually results in a square kitchen of about 3.20 x 3.20 meters that is hard to furnish. Every second kitchen in new builds has this shape, which just results from the house being almost square. I always wonder if this is mostly mandated by the development plan.
And regarding Fixer Upper, these houses definitely have character, great kitchens with Calacatta countertops, everything nicely color-coordinated and not just gray in all shades.