DOGE
According to recent lie of the land dogecoin can be something close to what you need, but, IMO, it'd have the same story as LTC.
Looking for the coin that will have high correlation for going up when Bitcoin goes down, and why.
Monero (XMR). Secure, proven, best team, best technology AND backed by early Bitcoin adopters financially. Absolute no-brainer winner and the only answer to your topic's question.
I doubt it would be XMR because of simple reason - it's correlate with BTC in direct proportion.