I think most of the sounds are likely synths. The plucked-string sound at the beginning and running in the background throughout sounds a synthesised plucked-instrument; as DrDan says, the stabbed chords sound like an electric organ, yes, likely a Hammond or a synthesised/sampled version of the same.

Jazz relative beginner, starting at a much older age than was helpful.
AVL:MXE Linux; Windows 11
BIAB2025 Audiophile, a bunch of other software.
Kawai MP6, Ui24R, Focusrite Saffire Pro40 and Scarletts
.