It was only an 8-part series, but I recently listened to Scamanda and really enjoyed it. Very in-depth look at Amanda Riley and her years-long scam of faking cancer to get hundreds of thousands of dollars in donations.
For an ongoing podcast, Stuff They Don’t Want You To Know. Goes into some weird and wacky news, history, and stories, very enjoyable listen. Also Scamfluencers for… well, stories about celebrity/influencer scammers.