Well I know alot of them, but not here in Nigeria. https://twitter.com/SaraSoueidan is one of them. There was a time devs were making fun of how CSS is hard to do for them https://twitter.com/hashtag/CSSisHARD?src=hash, these designers are protecting it and making the world know how much it is paying their bills, and they know nothing other than CSS. As I have shared with DHTML Nigerian ecosystem is not supporting all these. Most projects that you will be walking into will expect that you can do HTML, CSS, JS, PHP/NODE, ANDROID. And pay you as less as they can negotiate. Narrowed specialization (knowing so much of little things, e.g doing just JS/CSS/NODE/PHP) is not yet as relevant as it should be in our ecosystem.