CF convention update from 1.6 to 1.8 and ACDD alignment

[Aptychus]

Hello,
I am working on the release of a database that gathers many rain products to a specific format.
We use ACDD and CF conventions. From the source data that we have, a lot of products came with CF-1.4 to CF-1.6.
I was wondering if it is better to let our dataset with the Conventions CF-1.6 or if it is advised to go for CF-1.8?

I saw from http://cfconventions.org/faq.html#version_compliance that , if I have well understood, data compliant with CF-1.6 should stay compliant with CF-1.8, but seeing the revision history, I was wondering if some changes could impact standard_name or other attributes of importance.

Moreover I saw from https://wiki.esipfed.org/Attribute_Convention_for_Data_Discovery_1-3#standard_name that CF-1.6 is aligned with ACDD-1.3, so I was wondering if CF-1.8 was the same.
Best regards,
Jérémie