Conversation so far:
what type of poem is let america be america again
Let America be America Again is a sweet verse type poem so it has no regular meter.
What is Matsuo Bashō's Old Pond classified as?
The best-known Japanese haiku is Bashō's old pond:
What is the genre of Beowulf?
Beowulf is an Old English epic poem.

Question: can you tell me what type of poem My Light is Spent is?
Self-contained rewrite: What is When I Consider How My Light is Spent regarded as?