The Irish comic Dave Allen characterised the British press as follows:
One of the things about Britain, actually: you can always tell the way a person votes by the paper they read. For example, The Times is read by people who run the country. The Financial Times is read by people who own the country. The Daily Mail is read by the wives of the people who own and run the country. The Daily Mirror is read by the people who think they run the country. The Guardian is read by people who think that they should run the country. The Morning Star, or as it used to be known as, the Daily Worker is read by people who think that the country should be run by another country. The Daily Express is read by people who think that the country should be run as it was. The Daily Telegraph is read by people who think that it still is. And The Sun is read by people who don’t care who rules the country as long as they’ve got big boobs.
You get the idea
Someone tried tracking down the source here: http://www.dirtyfeed.org/2021/04/what-the-papers-say/
I tend to read a range of ideological slants when it comes to the British press, I find the Telegraph's and the Guardian's takes to be the most interesting of the bunch usually.
The Telegraph didn't just endorse Boris Johnson - he worked for the paper back in the 1990s, and after resigning his position as Foreign Secretary in 2018, he wrote regular columns for them.
More seriously, it's a bit of an oddity, really; it's a broadsheet under the normal classification, but certainly has tabloid-y elements.