This is mine, very comfy and versatile:

https://www.amazon.com/dp/B07ZP6SJDQ?ref=ppx_yo2ov_dt_b_product_details&th=1

I'm glad to hear that this type of pillow/wedges is helpful. I just got this gem in the mail today and am currently test driving it/loving it! Hope it proves helpful post-ACDF in a week.

This is awesome

Note: yes, it was spendy. Spouse and I each have low back issues as well so I'm sure we'll appreciate using it long after my recovery.