SDA smugposts. He's also the benchmark for visual design.
Rosanon is a guy that wishes he was a lesbian. His cyoa predictably have Yuri overtones.
Aromage is an actual lesbian. Her cyoa are expansive, full of surgically transplanted characters (perfect if you cream your pants at the thought of crossovers).
Lone Observer makes dark-themed and mysterious cyoas.
Italics fills his cyoa with so. Much. Text. He's also a master hyper (or his fans are at least).
(Stoned)celt is a CS grad student with no computer, owlposts/jesterposts, and loves weed (claims he's literally 6 foot high all the time).
Tokhar Gol loves RuneScape, is dyslexic, loves to shill his own cyoa, sameposts a lot, tries to act like an edgelord and based at the same time, Eurasian Swede, cucks himself by putting his stuttering wreck of a waifu in every cyoa he makes as an option (if not a requirement), and is easy to trigger. He's the most consistent source of nsfw cyoa of contentious quality.
Highlander is a Canadian Muslim, claimed by anons to be a female lesbian (debunked, but memers will meme). Writes the best.
Beri likes slimes and cute things. Shitposters convinced him edge was the way to go, which is what his last couple of cyoas were.
I'm a relatively new artist, and this is what I gathered in my last couple of years in /cyoag/.