TAG's: hoodies & sunglasses
LAG's: overweight individuals who order food at the table; all asians esp middle to older aged asian men
Nit's: Anyone with nerd glasses, all their buttons buttoned up; broke person on his last buy-in
Calling Stations: older middle eastern men who are drinking alcohol; nice old grandpa's;
Maniacs: young asian men with lots of jewelry and hi tech gear/headphones
These are just some of the images that come to mind from when I've played live at The Commerce. Sure they're generalizations and can come off as racist to the lay observer, but they are just observations that generally hold true. More often than not, people are not really trying to deceive with their appearance. I think I may have seen some people try to do this at Vegas many years back-- like a shark purposely dressing like an accountant, etc. But I find that someone's profession can be a very good predictor of their playing style in a vacuum.
Attorneys are usually TAG. High intelligence with an appetite for some risk, but not too much. The younger attorneys with some cockiness in them will be playing LAG. You can generally differentiate the LAGs from their TAGs by their immediate table presence, how they speak to the cocktail waitresses, how they put their arms on the table, how they throw their chips into the middle.
Accountants: nits and rocks. You don't see much aggressiveness out of someone wearing glasses and a button up shirt with a tie. Unless they've loosened their tie, unbuttoned their top few buttons, and are drinking (unless all of those)... you can generally assume they are a nit, and get out of the way when they raise preflop.
Hoodie/Glasses/Headphones: Tags and Sharks. Nuff said. It doesn't necessarily mean they are great players, but I can automatically assume they've read some stuff and know what they are doing, and know some advanced plays.
Women: this is the hardest type to initially read, because female poker players are polarized in that, they are either really good or are straight up beginners. I often see women using their sex advantage, getting other guys at the table to ease off on the river value bets, getting free cards and check downs. I will make it a point to extract the maximum from a beginner female player, even more so if she's attractive, just to set the tone for the rest of the table to know that I'm a straight up no mercy player. Sometimes the beginner female is incredibly difficult to play, because she might think her hand is weak, when in fact she has hit 2 pair, and I value bet the river and I lose.
Businessmen: this is a pretty wide ranging player type, but generally it's a man who owns his own business in some respect and comes to blow off some steam after work. I think they are LAGs for the most part. They couldn't give two shits about a few hundred bucks, and like to be aggressive.
Daily Grinders: Mostly nit/rocks and some TAGs. If I know they play every single day, then they are probably just trying to have a positive win rate, and therefore are more liable to fold rather than risk their entire stacks at any given time.
Some things I do to manipulate my image. I never use my player's card. I could be missing out on free money here but I'm hoping it sends a message to the rest of the table that I don't give 2 shits about making $1/hour-- I'm more concerned with relieving fools of their stacks. When I see another player making sure that the dealer scans his player card in, I almost automatically give that player less respect. Unless proven otherwise, players super concerned with making their hourly rakeback are just playing not to lose, and even this tiny amount of information I feel is exploitable. For these players, I increase my perception of the fold equity against them, as they are only calling with the nuts, and rarely trying to think about whether I actually have it or not. When the dealer sees that I am the only seat without a player's card scanned in, he will often remind me, to which I always decline.
Also, if I'm sitting nearby the dealer to where I can read the little screen that shows each seat and the accompanying names, sometimes a person's name will give me some insight into his personality.