I don't know why you have scare-quotes around diversity, but practically every company has diversity initiatives (random examples)[1][2]. The existence of such says nothing about the company's politics, or those of its employees, one way or the other.

I have no clue what you mean by "diversity" (with scare-quotes), so I can't really answer your question. A simple search for the words "diversity" or "diverse" turns up nothing on the Wikipedia page for left-wing politics.[3]

1. https://corporate.dow.com/en-us/about/company/beliefs-and-cu...

2. https://www.lockheedmartin.com/en-us/who-we-are/global-diver...

3. https://en.wikipedia.org/wiki/Left-wing_politics