The types of Digital Illustration styles are as mentioned:
Vector artwork is created with the help of Adobe Photoshop or Illustrator. It is popular because of its commercial usage and adaptability.
Pixel Art is a digital illustration style that is created with the help of micro squares assembled to produce images. One cannot create pixel art with lower resolution as it will ruin the quality of the art.
Comic Art requires a story that can be graphically shown with a speech balloon delivering the dialogue.
Commercial Illustration is leveraged to make more sales or spread awareness. These are a few of the many types of digital illustrations according to the Illustration companies listed with GoodFirms.