I created a google takeout and in that zip file I found some files containing a ton of data about me. It has logged every single page I visited while using the google search engine and chrome browser. It even logged every single time I opened an app on my old android phone. It even has VOICE RECORDINGS of me and a log of every time I used google assistant. This is just some of the data and I’m very sure there is even more data they have.
It could be they are collecting and hiding the data, but what they publicly disclose they have certainly varies. My de-google-fication really started when I used google takeout (like the OP here). Excluding things I wanted backed up (e.g. photos), Google still had more than a GB of textual data (this was 7 years ago or so—my memory may be wrong). I use Apple a lot so I went to their “takeout” page. They had a few MB of data pretty much all of which I considered innocuous. I don’t think they are equivalent.
I do agree Facebook probably collects as much data as Google, but I gave that up long ago.