Dom - Depends on how busy he is, which can affect his posting frequency and general effectiveness, but nonetheless contributes well even under limited pressure. Dom always likes to poke and prod, asking questions, typically ones that no one else thinks to ask, which can be a source of suspicion but also of unique and great insight.
DrWilgy - Loves to play with WIFOM and general mindfuckery. Loves to make gambits and play with an air of unpredictability and I'd say he always with a carefree demeanor. Tends to be a bit more susceptible to paranoia as a member of the town. His contributions can be underrated unfortunately, however, due to his demeanor.
Dyslexicon - Carefree and fun. Often suspicions are built around a healthy dose of tone-based observations and paranoia, but don't let that fool you into thinking Dizzy is a one-man pony; Dizzy can make some very analytically-driven insightful observations as well. I'm not sure I can say much as to differences between Dizzy's town and mafia game since I've only played 1 cycle of a game with a mafia-aligned Dizzy.
Epignosis - Assertive, bold, and confident. May become a thread leader, especially when no such leader doesn't already exists. It's not necessarily out of character for him to post less, especially on D1, though if he's busy and sometimes he likes to observe and then pounce once he sees something to interrogate or a way to get a reaction. Likes pressuring players. Likes to build proper cases, which can range from incredibly detailed and researched meta observations (some of the best I've ever seen), to grammatically-driven analysis (he is an English teacher after all), and to heavily analytical voting record insights and post behavior interpretations. He is a straight shooter, but don't put any sort of gambit past him either. I would say he's very difficult to sort into town or mafia generally, especially based on meta, but I think I have noticed a slight trend in that he tends to tunnel more when mafia and be more likely to work with and consider fellow town reads' thoughts when town, even if he's always stubborn.
Long Con - Crafty, cunning, and one of the most convincing liars you'll ever meet (when he's bad, but occasionally when he's town as well). He can be prone to make observations that come from a unique mindset as well which can get him into similar situations as Dom; it can present him with unwarranted suspicion but also with an intriguing and valuable perspective into other players' behavior. His game is an incredibly mechanical game of deception when he's mafia; I'd say less careful and more 'heart on the sleeve's when he's town. Across both alignments I'd say he may be more apt to put stock into meta assessments than the average Syndicateer, and that he's better at using meta to his advantage when developing reads than most.
nutella - Reasonable and insightful, usually all the while keeping a reasonable post count (unlike yours truly, who needs too many posts to make his points). Unfortunately I'd say she is often misunderstood and mislynched as town, which is a shame, because she can really outplay the field when she's firing on all cylinders (see: Phenon). Sometimes she can become boxed in by uncertainty, talking herself in and out of thoughts about someone, and a lack of assertive reads, but I think these can all be incredible strengths and often are. nutella is always very quick to recognize when she might be tunneling or have an unreasonable expectation of someone's behavior, and I think that's an incredibly strong trait, especially when she's town. When she's mafia I think she displays a bit more confidence and tunneling, and I think people are too willing to trust her when she's bad and the reverse when she's not for some reason, so watch out.
sprityo - Like Dizzy, I don't have quite the extensive meta history with sprityo as I do the other Syndicate players on this list (whom I've played and witnessed many games from), but don't get me wrong; he can be a very formidable asset in this community just like Dizzy. Unfortunately I would say sprityo has a tendency to get lynched early in games in general, which is a shame, because as the game continues I feel he develops a better footing and gradually becomes more talkative and analytical, whereas early on in games he can be more quiet and tone-based. I would say he is a unique strength in an ability to wrap his head around very complex role madness setups. Hell, just look no further than the clusterfuck (Phenon) he just hosted if you don't believe me.
S~V~S - An incredible adversary, S~V~S and I almost never see eye to eye.

But that's just because she approaches this game in a very different way than I do, and that's probably a good thing since I'm not very good. She's a brute force of insightful tone-based assessments, able to draw insight from even the simplest tone tick that ends up being accurate a stunning amount of the time. As town I'd say she tends to be a bit more emotionally tumultuous in her tone, and like LC, less careful and mechanical. She is also assertive and prone to tunneling across both alignments, but perhaps a bit more assertive and tunnely as town than when mafia. Don't let that persuade you from taking her seriously though; usually there's a good reason she won't let something go as town, and she is very good at conversing with other players, especially those she town reads, and taking what they have to say into consideration. But watch out, she'll pull the wool over everyone's eyes as mafia; she's a serious FEB.
thellama73 - Supatown. Very assertive with his reads, very tone-based and meta-based, especially early on in games, then later can drift more towards vote analysis. Loves reaction baiting and gambits. Doesn't post with as much frequency as he did when he first started playing mafia, but he contributes plenty with each post, even if many times it's with reaction baiting. As I mentioned earlier, I would say he is a bit more carefree and willing to throw out crazy statements when town, but he's capable of anything when bad, so don't put anything past him. Historically he also loves to distance from and bus his teammates, so never exclude him from suspicion even if he has a stellar voting record. An incredibly cunning baddie.