Who are typically the best connectors?

The best connectors are people you have a strong relationship with who have a strong or familiar relationship with your target. You will be able to see this in Connect the Dots. These people will know you well and be inclined to help you out by making the introduction. They will also be able to provide good context about your relationship in their introduction. In addition, they will know your target well so their word will carry more weight. If you are recommended by someone the target trusts they will be much more receptive to talking to you and any requests you may have.