I know it's not exactly what you asked for but there is an excellent theology book written by Frank Thielman on the entire New Testament - and his analysis of the specific themes in each of the Gospels separately followed by a synthetic unifying summary of overarching themes is fantastic! It is called:
Theology of the New Testament: A Canonical and Synthetic Approach. Each Gospel is considered in its own chapter and is then followed by a summary chapter to look at overarching themes in the Gospels. The first 218 pages are dedicated to the Gospels - more than adequate IMO. The book is fantastic and I wrote a review on Amazon at that link rating it five stars. No single volume I own in all of my theological library packs such a punch and is so readable and is as enjoyable as that book. I personally learned a lot about the themes in the Gospel of John from that book. His insights on Luke's theology are also good.
Thielman after covering the Gospels then does the same with the epistles and considers each in their historical, social, cultural, and linguistic backgrounds as the backdrop for the theology and then examines the specific reasons for which each epistle was written and to what audience(s), and then at the end of the book he writes summaries on Paul's theology and the theology in the general epistles, and then finishes off with a grand finale of the overarching themes across the entire New Testament. So he gives you a unique blend of a micro (book-by-book) and macro (common themes across books) perspective of the theology in the NT, which was incredibly helpful for me. This by no means is a New Testament survey but is an actual theological study of each of the NT books written with considerable thought, Scripture quotation, and scholarship (it has a good deal of footnotes for additional reading) from a professor of Theology and New Testament Greek at Samford's Beeson Divinity School.
If you want a succinct analysis (not a verse by verse commentary) of each of the Gospels separately that takes into account their unique character, audience, and purpose and then follows up by showing all of their unifying themes as well then I heartily recommend Frank Thielman's book. I even had the pleasure of meeting Theilman one time. Great guy. Anyway, I hope you find this suggestion helpful.
God Bless,
Josh