Have a sample door or drawer front made to evaluate color match.

Is it just me, or is Lantern Visual sounding more and more like an AI bot with every new reply?

Yes, exactly like the AI generated web articles that blab out a list of generic points.

So, you have not only excess width to use, but much more importantly you have lots of excess height to use - presuming the refrigerator was a standard full-height floor-standing model?

Drawers, cabinets, above and below the Miele oven, and presumably there was the usual cabinet above the refrigerator that needs to be integrated or replaced.

What to go there depends entirely on the rest of the kitchen and what you need/want to store.

And . . . is this cabinet part of a run of existing cabinetry, or does it stand by itself? How concerned are you with matching existing cabinet material/style/finish - and what is it - or would some variety be ok? Will you want a hood/vent above the oven - not common but some do. Do you want to provide for a possible future appliance to be added there - microwave, wine refrigerator, icemaker, etc? Do you have appliances you’d like to store other than on your counters?

I mean, if a 39” W x 80” H x 30” D space suddenly materialized in my kitchen, with none of it spoken for except the volume needed for a single wall oven, it’d be like the Kitchen Genie granted me one precious wish, not to be wasted!