At first glance, all three look very similar to me.
With more information I might be able to give you a useful tip.

- How did you come up with this selection?
- What do you want to photograph with it? (Landscape, portrait, sports, etc.)
- Is it your first SLR camera or do you already have lenses that could fit a model?

Thanks for the answer

-I come to the selection because I am interested in DSLR cameras. I don't really know much about them, but I have been served by my colleagues or tried them out in branches.
-I would like to shoot potraits, cities and landscapes
-Basically it would be my first own DSLR camera. However, I don't want to buy an entry-level camera as I don't want to buy a second expensive camera for my use later on. I prefer to learn with a more advanced camera.