Diversity and inclusion biases go beyond educational background. I have noticed the big tech firms (experienced this with a social network giant) are more biased to hire from a big consulting firm like McKinsey or Bain.
Despite having the requisite experience & education for the role, I got the boilerplate response without even talking to anyone. Some sleuthing revealed this big tech firm tends to recruit heavily from McKinsey. Most people at the role had this trajectory BA at Ivy League --> 2 yrs work exp --> MBA (Top 10) ---> Big Consulting ---> Big tech.
This seems to bode well who could afford either an ivy league education and an expensive MBA. Leaves little room for folks with street experience. On the other side, maybe it calls for long-term gorilla marketing tactics to really sell your personal brand.