I have used both of those for students, I am not dyslexic myself but kids have said those have helped.
And to answer OP (again not dyslexic so maybe someone with direct experience could chime in): highly depends on the font/person but mostly making each letters shapes unique to help even if not at first make it possible to learn the uniqueness so it can be read without mixing up letters.
For example: u, w, v, and y not being the same height/weight on each side, each being slightly asymmetric, etc.
https://dyslexiefont.com/
https://opendyslexic.org/
I have used both of those for students, I am not dyslexic myself but kids have said those have helped.
And to answer OP (again not dyslexic so maybe someone with direct experience could chime in): highly depends on the font/person but mostly making each letters shapes unique to help even if not at first make it possible to learn the uniqueness so it can be read without mixing up letters.
For example: u, w, v, and y not being the same height/weight on each side, each being slightly asymmetric, etc.