Best free resource I have found is https://upskillcourses.com/
They also have a more comprehensive paid set of tutorials. I am 74% through the free content and have already learned a great deal about Rails and also programming in Ruby. I will most likely continue on to the paid portion upon completing the free sections.
Also, a paid resource for the absolute novice is
I have not tried one month Rails but have heard from developers at a conference that their first projects were done right after finishing this course.
Great collection you already have. I did not know Mr. Hartl’s Rails book was available for version 5.x.x Bookmarked that one right away… thanks and best of luck!