Which sentence correctly uses commas to separate coordinate adjectives?

The Library of Congress appointed W. S. Merwin to the prestigious respected position of Poet, Laureate, Consultant.
The Library of Congress appointed W. S. Merwin to the prestigious, respected, position of Poet Laureate Consultant.
The Library of Congress appointed W. S. Merwin to the prestigious respected position of Poet, Laureate Consultant.
The Library of Congress appointed W. S. Merwin to the prestigious, respected position of Poet Laureate Consultant.

Question

Which sentence correctly uses commas to separate coordinate adjectives?

The Library of Congress appointed W. S. Merwin to the prestigious respected position of Poet, Laureate, Consultant.
The Library of Congress appointed W. S. Merwin to the prestigious, respected, position of Poet Laureate Consultant.
The Library of Congress appointed W. S. Merwin to the prestigious respected position of Poet, Laureate Consultant.
The Library of Congress appointed W. S. Merwin to the prestigious, respected position of Poet Laureate Consultant.

rowbe98 · Answer

I would say the last answer :)