Blue, you can check out the graph for yourself - here is the article re-posted. This is analysis from the office of the provost. Ivy+ peers get their English PhD’s out in a hair under 7 years; UChicago in a little over 7. A PhD isn’t exactly like a bachelor’s degree. Timing will on your topic, your advisor, whether you come in with an MA already, etc.
https://www.chicagomaroon.com/article/2019/10/24/uchicago-phd-policy-tradeoffs/
EDIT to add: Don’t just look at the Ivy’s here. Some of the best English deparments in the country are located in public institutions; Cal Berkeley, for instance.
EDIT to add: Yale’s department is excellent - top 10. Chicago’s is a top 5, likely a top 3. But both are excellent, obviously.