x42 Protocol by an extremely large margin.
Not only it is proven and not riding a 'DeFi' wave, but they are 100% self-funded, didn't hold and ICO or anything like that but also gave away a lot of coin for free in the beginning, which they still do to a smaller extent.

Specs:
- Feeless
- Proof of stake
- Cold Staking
- DApps
- Several avenues to get passive revenue (staking, hosting dapps, price locks, xServers and so on)
- EXTREMELY active team and development
- Cheap coin (around 1 usd cent per coin currently)
- NOT A TOKEN, x42 run on their own blockchain