Here is a good sourche to decide which altcoin to invest in. I would never buy a dead altcoin with no development except Doge. Doge is unique and will be successful without much development.

Source:
https://twitter.com/el33th4xor/status/1068856384983363585?s=21dead alts are:
- Verge
- Holochain
- Bitcoin Private
- Pundi X
- Poet
- Decentraland (MANA)
heey, thanks a lot for your creativity! and for sharing your statisics. i never know bitcoin private was dead, though maybe i just poor in my following the news. i think i'll be more alert from now on