All points above are great!
My response is a little off topic and also a little long but I hope it helps anyway.
I personally do not take much credence in the DEI words that companies add to their job listings when looking for a job.
I usually look for in community endorsement. If I am applying for a role that I find online (so no in community endorsement) I look at the website, I checked yours and your DEI statement is pretty far down the page, I would move it further up along with all the info on working at your company and state clearly what inclusive and diverse means to you at your company. A lot of underrepresented groups see the word inclusive and diverse and jump to assumptions about what that means. Clearly stating who “all” is, is super helpful for understanding the head space of a company and their intentions and values around DEI.
If you have the capacity maybe start an internship program that hires a large number of the group you are wanting to target so that you don’t have a token person for a long time working for you who feels uncomfortable and like the diversity hire. This will also make you “safe” within that community and word of mouth and community sharing will mean more people will apply and be hired in the long run.
Maybe also look at sharing beyond your social channels, as the people looking at your social channels will probably be similar to the people already working for you. Underrepresented people are not going to see the words in your DEI statement if they aren’t looking in that place in the first instance.
I hope this was somewhat helpful