There are certain events like halvings (BTC,LTC) and rebandings (NEO) that have historically led to real pumps, not just buy the rumor sell the news ones but actual triggers of massive gains.
Does anyone have any charts to share for various proof of pumps?
All charts are available in the web dude, even the basic coinmarketcap can show you this one so I don't know why are you asking for proofs.
The halvings though are not rumor, they're going to happen eventually and soon we will see a good price spike that could lead to another bull-run (at least in the case of bitcoin).
However, you have to understand that it would happen in a snap of a finger. It will still take months and slow, from 2016 and to it's peak in December 2017.