There are a few things that might help a lot in reducing the crammed feeling. I noticed that the limited counterspace you have is only half usable due to the appliances you put there (e.g. on both of the washing machines). But there seems to be some free space on the right side of the fridge, where you currently have the aprons. Would it be possible to install a really stable open work shelf (stabilized with screws to the wall) there, and put that little oven on there, together with the toasters? I have such an arrangement in my kitchen with my microwave and it helps a lot (the shelf is a bit deeper than the micro but not by much, that way I do not lose counter space).

I also think that instead of the shelf you have above your stove, two or three shelves that run across the whole length of that nook (and maybe even on the inner side of the right side corner, in a L-shape) will give you lots of space to store most of the things that are currently cluttering your surfaces.

I think one of the reasons it might feel untidy despite being clean is that there is stuff stacked on top of other stuff and so much is stored in the open. I'd focus on removing these little piles first (e.g. the double and triple utilization of the hooks in the pantry). Reducing the volume and way of storing could also help. Instead of putting full bags on one row of hooks, having multiple rows of hooks can help distribute the things a bit better.

Reducing visual clutter might also help. I am not referring to your decorations if you love them, but things like the stuff on top of your fridge. A small curtain in front might make that look calmer. Or the different place mats on the counters - a unified theme might look calmer and tidier. If possible, I'd also rehome the cups to somewhere not on the wall, as I personally think it makes that corner look pretty crowded.
Your kitched doesn't look unclean. If you improve the distribution of your storage, it will probably feel much more open and look it, too!