Is there a wall light or post light version of the Bentham Outdoor Hanging Single Pendant Light?

Yes, there is. The 19” wall light is model no. LM57752-1, and the post / pier mount version is LM030519-1. You should be able to find them both on https://kodabuilt.com . If you have any difficulty sourcing, please call KODA at 866-294-9244 (available Monday to Saturday 8am to 5pm PST).