T, I saw this in one of your post
1 in the LH / bass
When there is a 1 being played in the bass, just about any chord can go with if. But, your best choice chords to start with are the 1 chord, 2 chord, 4 chord, and 5 chord. From there, you can alter them to fit your sound:
C / C-E-G *1 chord in RH
C / D-F-A *2 chord in RH
C / F-A-C *4 chord in RH
C / G-B-D *5 chord in RH
Here are a few altered chords that go good with 1 in the bass:
C / C-D-E-G *altered 1 chord in RH (chord is a Cadd9)
C / G#-C-D-F *altered 2 chord in RH (chord is a Dm7 b5)
C / D-F#-A *altered 2 chord in RH (chord is a D major, together chord is a D7)
C / C-E-G-Bb *altered 1 chord in RH (chord is a C7)
C / Bb-E-A-C *altered 1 chord in RH (chord is a C13)
C / F-Bb-D *altered 5 chord in RH (chord is a Bb major, but it is acting like a Gm7 w/out the root)
C / G-Bb-D-F *altered 5 chord in RH (chord is a Gm7)
4 in the LH / bass
When there is a 4 being played in the bass, your best choice chords to start with are the 1 chord, chord, 4 chord, 5 chord, and 6 chord. From there, you can alter them to fit your sound:
F / C-E-G *1 chord in RH
F / F-A-C *4 chord in RH
F / G-B-D *5 chord in RH (together chord is a G7)
F / A-C-E *6 chord in RH (together chord is an Fmaj7)
Here are a couple altered chords that go good with 4 in the bass:
F / F-G-A-C *altered 4 chord in RH (chord is an Fadd9)
F / E-F-G-C *altered 4 chord in RH (chord is Csus4)
7 in the LH / bass
When there is a 7 being played in the bass, your best choice chords to start with are the 2 chord and 5 chord. From there, you can alter them to fit your sound:
B / D-F-A *2 chord in RH (together chord is a Bm7 b5)
B / G-B-D *5 chord in RH (together chord is a G major)
Here are a couple altered chords that go good with 7 in the bass:
B / A-D-E *altered 2 chord in RH (chord is a Dm sus)
B / F#-A-C#-E *altered 2 chord w/out root in RH (w/out root, chord is an F#m7; w/root, chord is a D9)
3 in the LH / bass
When there is a 3 being played in the bass, your best choice chords to start with are the 3 chord, 5 chord, and 7 chord. From there, you can alter them to fit your sound:
E / E-G-B *3 chord in RH
E / G-B-D *5 chord in RH (together chord is an Em7)
E / B-D-F *7 chord in RH
Here are a few altered chords that go good with 3 in the bass:
E / F-G#-B-D *altered 7 chord in RH (chord is a Bdim7, or B fully diminished chord)
E / G#-C-D-G *altered 3 chord w/root in bass (together the chord is an E7 #5 #9)
E / G#-B-D-E *altered 3 chord w/root in bass (together the chord is E7)
E / G#-C-D-E *altered 3 chord w/root in bass (together the chord is E7 #5)
6 in the LH / bass
When there is a 3 being played in the bass, your best choice chords to start with are the 1 chord, 3 chord, 4 chord, 5 chord, and 6 chord. From there, you can alter them to fit your sound:
A / C-E-G *1 chord in RH (together chord is an Am7)
A / E-G-B *3 chord in RH
A / F-A-C *4 chord in RH (together chord is an Fmajor)
A / G-B-D *5 chord in RH
A / A-C-E *6 chord in RH
Here are a few altered chords that go good with 6 in the bass:
A / G-B-C-E *altered 1 chord in RH (chord is a Cmaj7, together chord is an Am9)
A / G-A#-C#-E *altered 3 chord in RH (chord is an Edim7 or E fully diminished chord)
A / B-C-D-G *altered 5 chord in RH (chord is a Gsus4, together chord is an Am add9)
2 in the LH / bass
When there is a 3 being played in the bass, your best choice chords to start with are the 2 chord, 3 chord, 4 chord, and 6 chord. From there, you can alter them to fit your sound:
D / D-F-A *2 chord in RH
D / E-G-B *3 chord in RH
D / F-A-C *4 chord in RH (together chord is a Dm7)
D / A-C-E *6 chord in RH
Here are a few altered chords that go good with 2 in the bass:
D / F#-A-C-E *altered 2 chord in RH (chord is an F#m7 b5 or F# half-diminished, together chord is Dm9 b5)
D / F#-A-C-D# *altered 6 chord in RH (chord is an Adim7 or A fully diminished, togethe chord is D7 b9)
D / E-G#-B *altered 3 chord in RH (chord is an E major, together they form a stacked/layered chord)
D / A-C-E-G *altered 6 chord in RH (chord is an Am7)
5 in the LH / bass
When there is a 3 being played in the bass, your best choice chords to start with are the 1 chord, 4 chord, 5 chord, and 7 chord. From there, you can alter them to fit your sound:
G / C-E-G *1 chord in RH (together chord is a C major)
G / F-A-C *4 chord in RH
G / G-B-D *5 chord in RH
G / B-D-F *7 chord in RH (together chord is a G7 or G dominant 7th)
Here are a few altered chords that go good with 5 in the bass:
G / G-A-B-D *altered 5 chord in RH (chord is a Gadd9)
G / F-G-C-D *altered 5 chord in RH (chord is a G7sus)
G / F-G-B-D# *altered 5 chord in RH (chord is a G7 #5)
G / F-G#-B-D *altered 7 chord in RH (chord is a Bdim7 or a B fully diminished)
G / F-A-C-E *altered 4 chord in RH (chord is an Fmaj7)
G / F-B-E-G *altered 5 chord in RH (together chord is a G13)
G / B-D#-F-A# *altered 7 chord in RH (together chord is a G7 #5 #9)
What is the % of time that this is commonly used. My reason is I saw some video's where the right hand played a chord not necessary formed from the bass note.
Trying to play catchup to have chords, progression and the ability to pick up on songs better.