Although the popularity of specific designs changes over time there are lovely patterns that are always a classic and welcome addition to any entryway set. Lions and Animals Animal door knockers lions especially are a timeless pattern for most any architectural style. The dramatic designs offer something unique to the home and can be coordinated with most pre-existing door hardware. One of the most wonderful examples is shown below a hand cast solid brass lion head door knocker. Doctors Door Knockers This pattern may not be as well known today but at one point it was a method of identifying the profession of the home owner for potential clients.