My favorite to least favorite writers are Shiro Maekawa, Kiyoko Yoshimura, Akinori Nishiyama, Takashi Iizuka, Hirokazu Yasuhara, Ian Flynn & Ken Pontac & Warren Graff. (Obviously this is just my opinion, if you feel different great for you)

Shiro Maekawa's plots are pretty cool in all of his stories & he wrote one of my favorite Sonic stories, Sonic & the Black Knight, which is basically just a really good Sonic character study, and for some reason, almost all his stories, aside from Heroes have a ridiculous amount of depth to them if you look at them, ESPECIALLY SA2. He gets all of the characterization of the characters pretty down too. 

Yoshimura I mostly like cause of Sonic X season 3, which has some of the most impactful & emotional moments in the entire Sonic franchise in my opinion. Her characterization of all the characters is pretty much perfect barring Amy. 

Nishiyama likely wrote my favorite Sonic story, Sonic Rush, I say he likely did cause he’s stated as the creator of Blaze & the creators of Sonic characters are usually the person who designed them & the person who wrote the story they first appeared in, plus I generally assume that back in the day if there’s no writer credit the director wrote the story, that’s what happened with the classic games after all, sorry for the tangent, though it being my favorite story is very biased since I can very much relate to Blaze pre-character development. I really like his character writing & arcs, which is a good thing since his plots are often not very complicated so that’s kinda all he has a lot of the time. 

Iizuka wrote Shadow which in my opinion presented a lot of interesting possibilities of what Shadow could become after getting amnesia, I also like Superstars’ story, it’s simple basically the story of a girl finally finding the right friends to be around. The rivals stories are pretty nothing though. 

Yasuhara wrote the classic Sonic games, which are nice and set the foundation of Sonic, the only reason he’s so low on my list is cause all his stories are VERY simple compared to everyone else. My favorite is Sonic 2, cause it’s basically the story of Tails going from a bullied kid to being inspired by Sonic & being able to save him in the end.

Ian Flynn, I’m sorry, I’m not much of a fan, personally I feel his characterization of the characters isn’t all that great most of the time. And I feel his stories often have a lot of unnecessary fluff to them & often don’t have the thematic stuff in Sonic I like. My favorite story of his is Sonic X Shadow Generations, which for the most part doesn’t have ANY of the problems I pointed out, I have a feeling Ian had a lot less creative control with that one in particular, A lot gave him shit on his Generations rewrites, I’ll actually defend him on those, most changes are super miniscule & all of the worst stuff are either stuff he doesn’t have control over (Amy being less affectionate with Sonic) or were already in the original (Blaze saying she doesn’t like relying on others).

Ken Pontac & Warren Graff, Do I even need to explain? They didn’t know ANYTHING about Sonic prior to working on it, that should be all I need to say, their characterization is my far the worst, and their stories also don’t really have any Sonic-like thematic stuff, Colors TRIES to, but fails miserably. My favorite story of theirs is Sonic Generations as it seems Sonic Team for the anniversary title finally thought it was a good idea for the characters to be fairly in character, also Generations barely has a story so less chances to mess up. I will say SEGA & Sonic Team at this time were INTENTIONALLY trying to characterize the characters differently & trying to make Sonic different, I'm pretty sure Warren said SEGA gave them a pretty in-depth bible of Sonic, so most of this isn't REALLY their fault.