Finding a certain cog takes a little more than just running into any street in Toontown. Certain cogs can only be found on certain streets or inside buildings. The top two cogs of each type of cog are a little bit more difficult to find. These cogs consist of Corporate Raiders, Big Cheeses, Legal Eagles, Big Wigs, Loan Sharks, Robber Barons,Minglers and Mr. Hollywoods. To find these specific eight cogs you should either take over buildings or wait until an invasion specifically calls for them.
Every street has a specific balance of what types of cogs there are and what level these cogs will be. Below is a detailed table you can use when searching for specific cogs.