Course Hero supplies this character map of To the Lighthouse. While I can’t say I agree with the description of the “main” character along with other “major” characters, it’s interesting to see them presented in this manner.

True, I would say Mrs. Ramsay is indeed the primary main character (spoiler here — stop reading NOW if you haven’t finished the book) she is only physically present in the first section.
Where is nasty Charles Tansley? Where is the poet, Carmichael? Maybe they could be characterized as minor characters, but they’re so sewn into the story that it’s odd to imagine them demoted.
By contrast, Paul Rayley is unmemorable.
What do you think of this list? Are any of your favorites missing?
Would you argue, as I would, that Lily could be seen as the main character? She and Mrs. Ramsay are inextricably linked.