Here are some others:

https://www.amazon.com/dp/B07GGTVJSS

https://www.amazon.com/dp/B07RB2XVDS

https://www.amazon.com/dp/B07DGX1FYZ

https://www.amazon.com/dp/B07GVFSKL5

They all have a 2018 "available from" date.

I'm having an issue with the keyword tool as well. Here's a link to a product page.  Click the AMZScout button and expand line 1 of the results and click 'keywords'.  

https://www.amazon.com/Comfy-PRO360-Ergonomic-Multiple-Washable/dp/B07Q2NZBNG/ref=sr_1_1_sspa?keywords=office+foot+rest&qid=1565800683&s=gateway&sr=8-1-spons&psc=1&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUEyTUtCTUJaUUxYNTRXJmVuY3J5cHRlZElkPUEwNzY2MzEzM0JES1NON0pUVUQ3VSZlbmNyeXB0ZWRBZElkPUEwNDQ5NTI5M0c1UTBCVlJLRU1WUCZ3aWRnZXROYW1lPXNwX2F0ZiZhY3Rpb249Y2xpY2tSZWRpcmVjdCZkb05vdExvZ0NsaWNrPXRydWU=