Like iA Writer, there's a typewriter mode with line highlighting and text scrolling, but you have to turn on the various parts separately first. One big attraction is Styles, which lets you export documents using customized templates for scripts, novels, blog posts, and more.
The downside to Ulysses is that it's only available as a $40 per year subscription, and it's only available for macOS, iOS, and iPadOS. If you're a Windows user, unfortunately, it's not available.
Focus Writer
This is probably the most basic feature, but it shouldn't be overlooked: FocusWriter has all the basics you'd expect from a text editor, like spell checking and the ability to open multiple documents at once. It also has tools for serious writers, like stat tracking and goal setting.
Unlike most of the other apps mentioned here, FocusWriter uses Rich Text Formatting (RTF) instead of Markdown, but it does have perhaps the most customizable interface, with detailed choices for interface colors, fonts, and backgrounds.
One of its biggest attractions is that it's free and open source, but it's only available for Windows and Linux at the moment (if you know your way around the command line, you could potentially get it running on macOS, too, but it'll take some work and there's no mobile client or file syncing capabilities).
Omlighter
The idea of distraction-free writing is, at its core, a bit of a gimmick, but OmmWriter is perhaps the gimmickiest of them all. Rather than simply stripping away the clutter, it aims to immerse users in an environment conducive to a flow state, which includes calming soundscapes to help with focus and a variety of typing sounds to add to the atmosphere.
If you want more audible feedback while typing but don't want to invest in a fancy mechanical keyboard, this might be all you need, although I did notice a slight delay between when my fingers hit the keys and when sound came out of the speakers.