Don't see a link - probably because you don't yet have enough posts.
Apex single ring shifters seem to be available for both drop bar and flat bar bikes. Brifters (shifting integrated with brake levers) or trigger shifters.
Apex-1 cranksets available with several different size rings. 11-42 cassette provides for wide range. https://www.sram.com/sram/road/produ...350-1-crankset