Here are infographics summarizing the 'exoplanet zoo' out there. Figure 1 is a simplified version of exoplanet types based on size while Figure 2 uses both size and temperature for classification. These plots were prepared for the 1,000 exoplanet count celebration.
Figure 1. Types of exoplanets according to the PHL's Exoplanet Classification system. The red numbers in each category correspond to those already confirmed (total of 990). Many more are still waiting for confirmation.
Figure 2. Periodic Table of Exoplanets for current 990 confirmed exoplanets (17 planets are not included because there is not enough information to classify them). Explanations and any newer version are available here.