Wireframes can be pencil drawings
Wireframes are generally created by business analysts, user experience designers, developers, visual designers, and by those with expertise
Low fidelity wireframes
High-fidelity wireframes are often used for documenting because they incorporate a level of detail that more closely matches the design of the acutal webpage, this taking longer to create. For simple or low-fidelity
Blueprint Wireframe
Since wire-frame renderings are relatively simple and fast to calculate, they are often used in good cases where a high screen needed