Macbook Pro (Mid-2014) Display Question

Hi, I have 3 external monitors I was hoping to connect, one through the hdmi port (always worked fine) I also have two that are through thunderbolt to hdmi ports but only one monitor will be detected at once. My mac will only pick up the first monitor to be plugged in via thunderbolt, the second thunderbolt port will return a "No signal" to the monitor, and not be detected by the Mac at all.

Any ideas? Is this setup possible with my model Mac?

(Running El Capitan V10.11.5)

*The monitor through the HDMI port is 1680x1050, while the two through the thunderbolt ports are 1080p