What type of poetry is the poem fog by Carl Sandburg

There are a number of ways you could categorize the poem. It's free verse, since it doesn't use rhyme or meter. It's a nature poem obviously. And it's a lyric poem, which is usually defined as a short poem that describes something or expresses thoughts and feelings (as opposed to a narrative poem, which is like a short story or a novel in verse, a longer poem that tells a whole story).