Here is some more I came up let me know what you think.
Bb/ACDF
A/GCC#F OR EB/GCC#F
G/FBbBEb
DAE/FGCEG
OR
Bb/ACDF
AG/BbDbGb
GF/BEAb
DAE/FGCEG
Db/FBEbG
CBb/EAbBbEb
CBb/EGBbDb
F/EGAC
OR
Bb/FABbD
A/GbACEb
GDF/ABbDF
DAE/FGCEG
OR
Bb/FABbD
A/GbACEb
GDF/ABbDF
A/GCEbG
DAE/FGCEG
You can go on forever and ever. Just hum a different melody every time you play the original progression and use the melody as extensions to your chord. Hope that makes sense if not let me know,I'll try to explain in a diffrent way. Keep them coming man!!!!
God Bless!!!