Very well written post @costanza! I have historically associated your writing with gambling and gaming details for which I really have nothing to offer, in the way of supportive comments.
This post, though, is definitely something of interest to me. I will bookmark, for reference when I have more time to follow-up.
In response to your request for input, the most profitable ;passive income investment I have made is into KCS - the token of the KuCoin. It pays two different "bonuses" which accrue daily. That, along with the appreciation of the token price itself, has made it my most profitable investment of this type.
If you are not already associated with this exchange and interested in learning more, let me know. I will do what I can to help you.
P.S. Here is my KuCoin referral link.
RE: Passive Crypto Earnings June 2020 (Lending/Dividends/Staking)