Kyper Design System
Figma Community file - The Kyper design system was built by the design team at MX. It is built with accessibility baked in and works on any platform.
Lexie Readable (formerly Lexia Readable) was designed with accessibility and legibility in mind, an attempt to capture the strength and clarity of Comic Sans without the comic book associations.
Features like the non-symmetrical b and d, and the handwritten forms of a and g may help dyslexic readers. You can read more about the story behind Lexie Readable in the Kernel.