Google's use of same IP addresses (often of local caches) for all their services doesn't make it exactly easy to distinguish web browsing on their less bandwidth-intensive services from downloading of youtube videos. So if you want to slow down the download of Youtube videos in favor of faster download of regular web pages, it makes more sense to prioritize connections until they reach some volume of transported data and then start using lower bandwidth and/or priority queue for them.
A separate quest is to tell QUIC from other UDP streams, as there is usually no point in throttling "normal" UDP while QUIC is a TCP-like protocol encapsulated into UDP so throtlling it makes sense.
Instead of writing novels, post /export hide-sensitive. Use find&replace in your favourite text editor to systematically replace all occurrences of each public IP address potentially identifying you by a distinctive pattern such as my.public.ip.1.