5 Types of Logos (Examples):
Combination Mark - Combines wordmark and symbol or icon together.
Symbol or Icon - Usually an abstract logo that is very simple and easy to remember.
LetterMark - A unique design that better illustrates brand image by using initials or one letter.
Word Mark - A text logo that spell out the brand's name.
Emblem - A Wordmark and/or a lettermark, sometimes along with symbol encased within the design.