There are plenty of them. You can start here[1] and do digging to find whichever one you think is most appropriate. It has been years since I have looked at any of these in depth, but the general consensus has often been that at our best the US is on par with countries like Australia and the UK and is occasionally a tier bellow those two. I'm not aware of any that have us a tier above either of them when it comes to general freedom metrics.
I looked at a random few of those and I honestly believe their categories are too broad/subjective.
Funny enough, downloading an actual report (https://www.cato.org/human-freedom-index/2021), the UK scores almost perfect (9.8) on "Freedom of internet Expression." The country where you can quite literally be arrested for making an offensive tweet (not a threat), scores just shy of 10/10 on internet freedom? Are the arrests the reason for losing 0.2? I would _love_ to see the methodology behind that score.
Germany, the country where you can have your house literally raided over calling a politician a "dick", scores 9.36 "Internet Expression." 9's are some of the highest scores you can get.
The institutions that put these together have 0 skin in the game. I have tried to find how they create their "indicators" but haven't found anything. I honestly just cannot take these reports seriously unless someone has an answer for how countries that can arrest citizens over offensive tweets could score so high on this particular metric.
Maybe some of them do have categories that are too broad or subjective. That is why I referred to the consensus of the lists and not any individual list. Those list come from a variety of political and ideological backgrounds, so any biases should be reduced in aggregate and they all seem to end up showing the same pattern. The US is generally in the 2nd or 3rd tier while Australia and the UK are generally in the 1st or 2nd tier.
I would assume this means the experts have concluded that the right to be rude to a politician on Twitter is not a particularly important right and its removal doesn't have much impact on the overall freedom of that society. That seems more likely than a diverse group of think tanks, academic institutions, journalistic outlets, and NGOs have all either joined a conspiracy or randomly acted in concert to misrepresent the relative freedom of the US in comparison to our peers.
>Maybe some of them do have categories that are too broad or subjective.
All of the ones I have looked through have that. Every single one.
We're looking at just one metric though. Freedom to express ideas on the internet. Countries where you can get arrested for "offensive" tweets or get your house raided for calling a politician a dick score a few 0.1s away from the maximum of 10. We don't know how, because AFAIK, they do not go into specifics about why they give the UK/Germany a 9.x/10 on "Internet Freedom."
>I would assume this means the experts have concluded that the right to be rude to a politician on Twitter is not a particularly important right
Then I, along with most people, would conclude that their metric (and possibly by extension, their entire index) is useless. Not having your house raided for calling a politician a dick is exactly what most people would consider a particularly important "right."
[1] - https://en.wikipedia.org/wiki/List_of_freedom_indices