Semi-detached house on a hillside with a basement, looking for a floor plan.

It's just about examples of what is possible.

I understand that individual planning according to the topography and location is important.

And an architect who works for Schwörerhaus has, as I said, drawn the first draft, but over 3 floors.

That was 3 months ago by now, and the last contact was only about the current price increase of 3%.

Did they have an architect from Schwörerhaus or just a sales consultant?

We were at Schwörerhaus back then, also with a sloping site. At that time, they took a model house and considered a hypothetical slope (window taken out, no door there). For more details, we need to hire an architect. He can recommend one to us.
However, the sales consultant came up with a great floor plan and fitted our room program into 160 sqm.

And an architect who works for Schwörerhaus, as mentioned, drew the first draft, but over 3 floors.

That was 3 months ago now,

Has a contract already been signed?
Otherwise, you just have to adjust your requirements for the house with the architect because otherwise it won't fit the budget. A perfectly normal procedure.
By the way, it can get very stressful for both sides if you only ask questions in the forum on behalf of your colleague over a long period and do not know his answers.
How long do you want to play this role?

Why for him, I want to show him something and give him a push in a direction. What he then makes of it and with whom he then develops his plans is his problem.

Fortunately, nothing is signed yet.

in our region there is an architect who is also a sales consultant.

Why for him, I want to show him something and give him a push in a direction.

But then please simply and no expensive 3D visualizations created ;)
You know what I mean?

And honestly: if he has such an interest, then he takes care of examples himself or goes to the architect.

I am referring to #5... You definitely want to recommend your buddy the taste of fish, now expect a tasty ready meal with caviar at the supermarket ;)

That may be nice of you, but if I were you, I would send your buddy to a fish restaurant, it can also be a North Sea restaurant or fish stand, so he gets fired up by the taste ;)

A simple 3d view from someone else who planned it would have been enough, if such a thing exists. Also from Gu's who advertise with it.

Expensive 3d visualizations, that's what you are fixated on.

As I said, they will also find their way without me.