Sorry if I wasn't clear. I thought you understood where those things were, because it seemed like you were talking about modifying them in your original post, you said you read the wiki page, and "Customize view" was actually visible in your original screenshot (so at that point I knew you knew where it was). And if you explain to people too carefully or pedantically like they don't know, they get upset when you tell them things they know because they think you're talking down to them.
You can't win really. I choose to assume people know what they're doing, until they prove otherwise. So anyway if we meet again like this and what I say isn't understandable just say so.
You can get "Customize view" in several ways. (1) In the menu depicted in your screenshot, (2) from the dropdown menu on the tab in the upper pane, and (3) by right-clicking on the name of the view in the tree (in your case, the word Genres). "Customize View" appears on all those menus.
Judging from your second screenshot, you had modified that at some point in the past. Perhaps by clicking column headers. Do you have the option Marko mentioned, Options->Tree & View->Sorting->Save changes on list header clicks enabled?? That's probably how some of that junk got in your latest screenshot. You can remove the ones you don't want, like sorting by size.
There are lots of different ways you can sort in MC, and there can be some overlap, as you can infer from the exchange Marko and I had. It can be confusing. Marko and I are pretty experienced, but still, as you could probably tell, neither of us was definitely sure what your problem was... It was sort of a "Hmm, well, it might be this, or maybe that..." sort of situation. Like I said, it can be confusing.
Like when I saw Marko's first post. I know Marko definitely knows what he's talking about, so I was sure he wasn't wrong, but what he was saying was wrong on my PC; and I knew I wasn't wrong either. So his post surprised me... But I figured there had to be an explanation, and there was.
Another thing that complicates the situation is that a lot of the people who are best suited to answer complicated questions, they've been using MC so long and they've customized their MC so much, they don't even remember what the default state is supposed to be. So when you told me you'd left some settings at the defaults, that didn't mean anything to me. I just thought to myself "Pfft, I wonder what the defaults actually are." And I wasn't going to do a fresh install of MC on a new machine just to find out.
So for example, I have no idea what the default state of "Save changes on list header clicks" is. I have it enabled. I think Marko keeps it off. If I recall, I think that option was added (don't remember when) to actually make it easier for people so they wouldn't have to go into Customize View to permanently change the sort.