Thank you very much for your feedback.
Solutions 1 or 4 seem to be standing out for you. I will show the thread to my wife.
My personal tendency is currently towards solution 4. Apart from the fact that it would be the cheapest, there are two reasons for me.
1. We want to place two pull-out cabinets with 3 compartments next to each other. The induction hob is then flush-mounted centrally in the countertop above. In the two deep compartments, the pots needed for daily cooking and possibly some regularly used supplies (salt, sugar, flour, etc.) should be stored.
2. Similar to Toxicmolotow, we have various nice (sometimes large) items that are rarely used and should disappear from view. Raclette, crepe maker, possibly the large wok – with two toddlers who are now slowly joining us at the table (including a picky eater), I can’t make my Chinese stir-fry pan.
So I could imagine solution 4 with a normally opening 60cm cabinet where the extended boards fill the corner.
Let's see what my wife thinks about it.