Should I submit one STEM + one humanities LoR?

My guidance counsellor told me that my math teacher’s LoR was the best, so I’m sending this everywhere. I have 3 more LoRs–one physics, one chemistry and one history. She said that the rest are similar in quality.
Would it be better to submit the history LoR as the second letter, so that they might see me as more well rounded?
I put (in order) electrical engineering, engineering physics, and CS+humanities on Common App as programs of interest. Should I submit a science teacher’s or history teacher’s letter as my second LoR?