As all you automotive folks know , AUTOSAR has been one of the most successful architecture pattern for developing embedded systems for automotive products like Infotainment cluster, Body computer etc.

The major player who provide AUTOSAR stack are
1, Vector
2, Electrobit now part of AUMOVIO which is re-branded, re-positioned erstwhile continental.

I would like to bring your attention to couple of new names, not new due to their entry but to my cognizance.

One is AVIN systems which provides classic and adaptive AUTOSAR, you can find the details at https://www.avinsystems.com/products/

A second one Korix.ai which has offerings of both classic and Adaptive at https://www.qorix.ai/our-products/


Disclaimer:
I am not associated with either of the companies.