I Netflix quite a bit when I'm not gaming, but "& chill" not so much. Not sure if you know what this term is used for...
I am currently watching Hemlock Grove. It's keeping me entertained, but I am not sure if I
love the show. Probably cause one of the main characters - who is apparently most-liked on a series website I use to track what I am watching - annoys me terribly much.
I too watched Stranger Things, Penny Dreadful and Shadowhunters. I loved Stranger Things, liked Penny Dreadful (too much naughty-times for me to say it as clean as possible hehe but the show was great for me), and Shadowhunters was alright (also one of the main characters is just really bland).
Although I've seen The Returned, I don't recommend it. Got cancelled with an open ending. Nobody likes that. Was nice while it lasted.
As for recommendations...
- Stranger Things
- Penny Dreadful (if it's your genre)
- Hannibal (if it's your genre, not a Netflix-only series)
- Jessica Jones (I was very surprised by how much I liked it, it's not like other Marvel work IMO)
If you're ever curious about what else I watched outside of Netflix, I can pop you the URL of my series tracker. I say this because with above info you kind-of have an idea of what my taste in series is and if yours is comparable it might be interesting, haha.