I'm using a Dygma Raise split keyboard with Dvorak as my main layer. The thumb clusters are great for putting difficult to reach keys in more comfortable positions. Second layer has NumPad, Directionals and Functions. Still trying to decide how to make the best use of my other layers.

I’m having to use US keyboard layout in Oz and not enjoying the half-height Return key very much.

I'm using the Czech keyboard, I've put in the time to learn where the various symbols are because I didn't really want to switch constantly between CZ and US like most programmers do. When I write something like těžiště I prefer it not to look like t26i3t2, then delete it, switch keyboards and write it again.

Regarding the various types (like long/short enter, pipe symbol position etc.) I don't have a particular preference, when I switch laptops, I make mistakes for a while, then get used to it

I use the International keyboard because it allows me to type a lot of symbols, but US also serves me fine

Edit: to program, I use the US layout.

I'm using Finnish keyboard layout (same as Swedish basically).

I like how AltGr+7/8/9/0 gives me { [ ] }, it's a very nice grouping. The key next to Z is < > and you get | with AltGr, which is very handy.

Only thing that's mildy annoying from programming viewpoint is that for tilde and backtick, the keys do diacritics - you need to press the diacritic key and space. Backtick is especially fun, because it's shift+acute, space. Meanwhile, the key next to 1 does § ½, which aren't that handy most of the time. I often just stick backtick on that key if I'm particularly assed to customise keyboard keyouts. Similarly, shift+4 is ¤, which is another not a particularly useful character (but I don't mind that, because £ $ € all need to be produced with AltGr, which is at least consistent).

I alternate between US-QWERTY and LT-QWERTY. My biggest problem is typing ž instead of =

I use US-QWERTY but with the pipe/backslash key as backspace, and the key where backspace usually is gets turned into two keys, pipe/backslash and grave (yes, there is a keycode for grave (`) by itself).

My os is running with a slightly modified us qwerty, which then is mapped through keyboard firmware to a modified us dvorak.