Which flooring to use on the upper floor and attic floor for a new building?

Hello,

we have bought a semi-detached house and are currently dealing with the flooring.

On the ground floor, basement, bathroom, and guest WC, tiles will be laid by the developer.

On the 1st floor and attic are bedrooms, dressing room, children's room, and studio.
the floor should have the following properties

resistant and scratch-proof
have very long durability
be easy to maintain
suitable for underfloor heating (everywhere in the house except in the basement)
be able to be installed by oneself without great craftsmanship skills

Which floor would you recommend to us?

We were thinking of click vinyl or would you recommend something else?

what should be considered with vinyl and other types of flooring?

If you can already come to terms with the look of vinyl, I would always recommend laminate. It's quite similar but much cheaper. Vinyl prices are outrageous for what it is and can do. Often it is not moisture-resistant, especially if it is also on a carrier board. The only points where vinyl really always has an advantage over laminate are in thermal conductivity. Some prefer the "soft" walking feel. To me, it rather reminds me of walking on plastic. So if you don't want parquet or tiles (for whatever reasons) and you don't like the look of linoleum, I would rather recommend laminate. Vinyl would only be used by me without a carrier board and glued down in rooms with possible moisture, if tiles don't work due to the installation height.

Which flooring would you recommend for us?

Parquet - I would also choose that for the ground floor (but that's just by the way). However, it is a personal decision and completely subjective.

We have no problem with the feel and appearance of vinyl.

Aren't laminate and parquet more prone to scratches or dents?

We don't need moisture resistance; water rarely spills in the rooms (at most, a bottle of water might fall over).

In the living area, we have tiles.

We have tiles in the living area

Why not in the rest then?

Aren't laminate and parquet more prone to scratches or dents?

You can't say that so generally.
There is commercial laminate that can withstand a lot. There is bad vinyl, with which after a year you have a haze from all the small scratches caused by the child sliding around.
Parquet can easily get scratches and dents, but for many that is part of the natural look of a wooden floor. It depends on the thickness of the wear layer. Under 3mm you quickly see the unsightly layers underneath. In theory, you can sand parquet and thus remove scratches and surface dents. In practice, I don't know anyone who has ever done that except when moving into an existing property.
So no, the supposed sensitivity would not be an argument in favor of vinyl for me. On the contrary, I consider the average vinyl floor more sensitive than the average laminate floor.

we bought a semi-detached house and are currently dealing with the floor. [...] Suitable for underfloor heating (throughout the house except in the basement)

Although it does happen that developers also develop properties with underfloor heating on all above-ground floors, it cannot be taken for granted (especially with nationwide developers it is rather rare). So are you sure that your property is adapted to this requirement?