I launched The Psych Files podcast in January of 2007 and hosted it for 13 years. Some stats:
Over 21 million downloads worldwide
Every episode (2/month, total = 330+ to date) downloaded 5k times within 24 hours, achieving at least 20k downloads within a month
Promoted through a dedicated Facebook group (3k members), a YouTube channel (3.5 million views for the 130+ videos, 18k subscribers) and an active Twitter account (2k followers)
Featured on the Discovery channel, NPR, and the Oxygen network
Sponsors include ZipRecruiter, Wix, Casper, Squarespace, Cambridge University Press, Chegg, and Audible.