It depends on how you define liberal. For example, Afganistan, Somalia, the Ukraine are very liberal nowadays: weak central government, weak central censorship, weak currency. Instead, warlords and gangs having the same functions – but it can be treated as liberal and democratic construction - you can always do the same and everybody has equal rights (kind of early US).
> "Classical liberalism" is the term used to designate the ideology advocating private property, an unhampered market economy, the rule of law, constitutional guarantees of freedom of religion and of the press, and international peace based on free trade. > > – https://mises.org/library/what-classical-liberalism
The parent comment, however, argues that all the liberties were only available to the nobility, not that it was liberal in a different sense of the word that we use nowadays.
Comparing renaissance-age Poland to any of the modern-day countries you've mentioned doesn't make sense to me (also, it's Ukraine, not "the Ukraine").
> Poland had the szlachta, a broad citizen-warrior class that can be thought of as an upper middle class. This amounted to 10% of the population. That might sound like a very limited form of democracy, but it is the same percentage of the population as voted in the famous democracy of ancient Athens
I'd suggest reading the article if you haven't already. It doesn't argue or force a definition of 'liberal' or 'democratic' but describes the period of Polish history apparently poorly highlighted in the curriculum of US schools.