I am starting my $2^{nd}$ undergrad analysis class in which we will cover chapters 1-4 of Stein's book (includes Measure Theory, Lebesgue Integration, Dominated Convergence Theorem, Hilbert Spaces, ...).
I have looked at the textbook and it looks traditional; this is good, but I am looking for a secondary book which is more informal/visual/intuitive which will help me understand the material better and build more intuition.
The following are examples of books from other fields which are comparable to what I'm looking for now: Visual Complex Analysis by Tristan Needham for Complex Analysis, Understanding Analysis by Stephen Abbott for basic Real Analysis, and The Art and Craft of Problem Solving by Paul Zeitz.
Thank you.
Edit: One explicit characteristic that I'm looking for is that the book gives details on how one might have come up with a proof, not just gives the most polished version of the proof.