Another +1 for this feature.
I realize you can start typing in the dropdown and it'll take you to that font but I prefer how Adobe and Sketch filter out all other fonts so you just get the ones you're looking for. Also, if the font is in your list of recently used fonts at the top and you type the name it selects that version rather than taking you down the main list to show all the other fonts within that family. For example, I used "Nexa Black" so now I want to try "Nexa Book" but when I type "Nexa" it just highlights "Nexa Black" at the very top so I have to scroll all the way down to find what I'm looking for.