@XDownwiththissortofthingX
Sorry but JKR is by no stretch of the imagination 'Lefty'.
You just need to look at who some of the characters she mutually backslaps on twitter are to realise that.
There are a million and one reasons to find her utterly objectionable that are nothing whatsoever to do with any perceived 'transphobia'.
I'm guessing you're one of those people who calls Keir Starmer 'Keith' and rants about him being a 'closet Tory' & claims the right-wing in Labour 'worked to deliver a Labour defeat'.
For the majority of people, Rowling meets the criteria for being 'of the Left'.
She donated to the Labour Party.
Indeed, behind the outrage about her being a 'transphobe' is a history of attacks on her because she openly questioned Corbyn's electability as a Leader. And I think she also raised the issue of antisemitism in the Labour Party under Corbyn.
That enraged a certain section of Twitter. (I suspect you would see that section as being 'true' Left ...)
There followed an onslaught, accusing Rowling of being anti-Semitic.
It was horrible. I suspect it was co-ordinated, too. Many of the Corbyn outriders (who we know were linked on social media accounts, sharing the message they wanted to get out) all tweeted remarkably similar messages.
And following that, there was just a constant attack on her for not being supportive of Corbyn.
The charge of anti-semitism against Rowling was particularly heinous, since it was used to essentially cover for the terrible problem Corbyn's Labour had.
And it grieved me to witness it.
It's worth remembering that this predated the 'furore' over her remarks on the trans issue. And I think it is an issue underlying the response to those remarks.
But, yes, she has 'lefty' credentials.
And you'd have to be quite daft not to pick up on the general progressive liberalism in her books, along with the satirical references to education policy under Thatcher in the later books.
But, hey, crack-on with claiming anyone and everyone isn't Lefty and pure enough. S great strategy for electoral success ...