Question

what type of poetry doesn't follow any rules or have a rhyming pattern

Answer 1

Free verse poems. Free verse poems have no rythm or rhyme but are still creative.

Answer 2

In my search for the definition for the poetry term "doggerel," which I still do not understand, I came across the term "irregular rhyme." Can someone explain the definition of these terms, and how they are used in the literary sense?