I recently discovered the Grimoire series online to be quite complete as a reference book and very picturesque oreiented hence my interest in it; the books you mentioned are also very good recommendations 
You might also wanna add
1)Jazz Piano Book and Jazz Theory Book by Mark Levine
2)Chord Scale Theory and Jazz Harmony (Berklee Press)
Transcription is the best way and is widely followed in most instructional methods and totally agree on its benefits.
Unfortunately you won’t find any particular’Gospel or Neo Soul’ guitar books but the keyboard oriented video courses and some published books by major music publishers (these church cats don’t write books for some reason) have existed for about a decade now with guys like Jamal Hartwell (Gospel Musicians), John Peters and K.C. (Pretty Simple Music) and others like them making church music a technical thing too. Various online courses and learning community portals have come up since then. Coming from jazz and blues and funk and RnB the sound of these modern styles can be categorised as contemporary Black urban and not of them are ear schooled and started early from church scenes, the resulting sound is remarkable (!). Keith Jarrett and Chick Corea are two more commercially and critically acclaimed pianists who incorporate these alternate playing styles too from time to time. Some of the members of Snarky Puppy and Jacob Collier himself have this modern jazz sound with very obtuse harmonies borrowed heavily from all the styles to make it what is sound alike. Joey Alexander plays what sound alike his own unique take on jazz harmony and melody and it’s quite different from the usual expected fare. Bill Evans’ music has extremely mature harmonic and melodic sensibilities which pioneered many jazz foundations like shell voicings and outstanding voice leading. For a really cool jam session between finger drummers, bass guitar players, Rhodes gospel keyboardists and jazz piano players, saxophones and synth bass as a repeated music session of pure groove and excellent check out :
This channel has only some 3.2k subs and is jam packed with awesome jam sessions over classic Dilla tunes, various modern hip hop standards and Neo Soul stuff all decked out…
For guitarists however its vanilla and old school jazz and the countless instruction books and old to new DVD courses to get yourself a decent amount of instruction if you want to end up playing Black urban music and learn it theoretically or ‘academically’.
Moonchild is a band comprised of all jazz music graduate student lineup who are composing and attracting a parallel performance career as a Neo Soul band…very cool sound and great compositions.
https://youtu.be/8DlmgYtHrC4
Mndsgn makes some really grooves stuff…
Mark Levine’s Book:
https://www.amazon.in/gp/aw/d/1883217040/ref=mp_s_a_1_4?ie=UTF8&qid=1521540442&sr=8-4&pi=AC_SX118_SY170_QL70&keywords=mark+levine&dpPl=1&dpID=51a5s4mukGL&ref=plSrch
Andy Brown is a relatively new and outstanding guitarist in terms of flow and techniques…just watching him burn thorough…
Awesome comping and soling with a singer, super intimate:
One with Howard Alden another brilliant Jazz guitar player:
Outstanding John Stowell:
Scottish Jazz guitarist Jim Mallin on an interview playing a super emotional and rich chord solo(chords are !!!):
And Pat Martino is still alive btw…please any of us who love jazz guitar get this ‘guru session’:
https://truefire.com/pat-martino/the-nature-of-guitar/c1002
Right now at our times information is quite abundant, prioritizing and digesting are the essentila activities, not collecting or memorizing…just too much stuff everywhere.
David Sudnow’s critically acclaimed book on how he taught himself jazz improvisation and piano on his own over a period of 2 years is an informative and pedagogical read.
https://www.scribd.com/doc/182920083/Ways-of-the-Hand-pdf
Charlie Chirstian had a playing style that can be told as chord tone soloing versus chord scale technique of soling that is also widely practiced. The chord tone focuses more on resolution points and smooth voice leading between important chord tones and their relationship to the chord progression direction and the addition of embellishments and chromatic passing notes. Chord Scale is way more involved with a listing of various scales that go with each chord and their modes thereof. Both seem to work but it seems the best guitar players like Chirstian and Joe Pass and even Pat Martino were and are always good at simplyfying rather than convoluting their thought process… it’s pays to know the difference and since Joe Pass sounds nothing like Allan Holdsworth or Metheny, their individual quirks and methods should be taken as case studies and individual techniques rather than a singular school of instruction. Another thing is that a surprising amount of jazz guitar players listened to Piano players. Wes Montgomery himself had Christian as a major influence and his brothers were excellent piano players who he jammed with and developed his sound from.Most of them highly recommend learning to play piano too.
Steve Krenz has a nice interview channel for guitar player all around and some of the guitarists featured there have some nice information about their career and learning experiences.
Lots of University level courses in jazz too…(this chat could go on and on…)