I'll bite. Franklin? Sure. Teddy?
If you wanted to have a real discussion, we could point at a whole slew of Presidents, including Obama and Clinton, who gave speeches promoting views and actions that today's "left" claim are "far right" all the way from border control to balanced budgets.
I'll agree to that but the reason why I consider Teddy more left-leaning than the average American president of today is simply because he went after the big banks and corporations. This is fundamental to leftist ideology. Of course, you could also make an argument that his conservationism is more left-leaning these days. I'm not entirely sure where I stand on that but I think a lot of people, republicans, especially, would agree. Since you see so many Trump supporters happy about the defunding of national parks and their federal workers.
If you put all else aside, he was a very progressive candidate for his time. Whether it be government reformation or labor reform (on the side of labor rights). He has many qualities of candidates like Bernie Sanders today and less qualities like your typical Republican.
But yes the topic title is clickbait. He isn't really a leftie.