"Samson Agonistes" was written in free verse style.
"I, Too" was also written in free verse style.
"Mending Wall" was written in blank verse style.
"Hamlet" was also written in blank verse style.
Explanation: free verse poems follow no rythm nor rhymes. In this sense, the author can write poems without following any metrical pattern. Unlike, blank verse which follows metrical patterns. This can be easily understood by the rhymes at the end of each line. The last two poems rhyme, whereas the first two poems do not.