code editors might have the features you want, and its easy to repurpose a code editor into a notes app.

sync a folder between your devices (syncthing is great for this) and put markdown text files in it. I like to call this folder “Memo” since its like writing letters to myself.

edit the markdown using VS Code (desktop) or Carbon (android). I haven’t tested whether Carbon can do this, but I know in VS Code, you can reorder a list with keyboard shortcuts.

click anywhere on a line of text, then hold Alt and press Up arrow, and the text will swap places with the line above it.