With the DOT hype my pick is DARK
6.5 million circulating / 10 million max
18% cold staking via wallet
decent tokenomics and good development happening

I just posted a topic here for more info https://bitcointalk.org/index.php?topic=5315181.0

SHIFT NRG also seems to be moving to DOT but I haven't enough research yet - look into it though if you're keen