"Known to collect" is going to be vastly different from what's actually being collected. It's more realistically just serving ads, getting some crash/error reporting. But because it's all under Google, it's going to show up as Google. DDG/other blockers won't know the difference.
I've been using AdGuard on my phone (OnePlus 6T) and tablet (Tab S7 FE) for quite some time now. Neither device is rooted.
I got AdGuard lifetime license on sale from StackSocial a while back. The app isn't on the Play Store (if you look for it, you will instead find an extension for the Samsung browser or something). They have you download the .apk from their site, and then you can set up the blocking how you prefer.
It works by setting up a local VPN. I think there's other ways to use it but I didn't feel the need to tweak further. Because it acts like a VPN, all app traffic flows through it so ads are blocked pretty much system-wide. Browsers, social media apps etc. Honestly I'd highly recommend it.
This is incredibly useful! Looking forward to the release!