Gospel in Life: A Harmony of the Gospels for Students of the Life of Christ by A. T. Robertson (2021 Book 94)
This book presents each of the gospels together but in parallel columns. This is helpful for comparing the different versions side-by-side, but it does make the text rather tiny, particularly in the ebook version. I had to zoom in and out a lot. Where only one gospel covers an event that passage is presented alone, so the formatting varies quite a bit throughout the book.
I think the best part of this book, though, is the footnotes and ending appendices which give a lot of extra info on choices Robertson made in chronology and some insights and references on difficult passages.
This was definitely not the easiest version of the gospels to read, but it is one of the more helpful in terms of detail.