This chart is showing you the top 200 coins performance against bitcoin. It's clearly who is outperforming here. Bitcoin is the king of crypto. Alts got rekt specially when bitcoin made a move like Jagger on the 1st April. But that wasn't april's fools day! Or was it?
source
https://twitter.com/woonomic/status/1161320822344179720
I think this chart is a bit deceptive without context. It appears to be an index, which means that all coins (including Bitcoin) will by definition converge to a value of 1.00 at the extreme right of the chart. The price of each coin on the 13th of August 2019 (or thereabouts) is normalized to a reference of 1.00, and the prices of preceding days are shown relative to that reference.
Since the reference point is the middle horizontal line, one side of the chart (presumably the more sparsely populated bottom area?) will show coins that have actually made a substantial improvement to August 2019. This means that those which were hovering below 0.10 had increased in value by more than 10 times at the time the chart was generated.