The thing that seems most in common between these two, to me, is the envelope, particularly the attack. The basic tone of each is different, as Dave and John Wu point out. But the attack, while short, is a little on the soft side. I'd guess the attack, presuming it goes from 0 to 100% in the first stage, is something in between 0.06 and 0.1 seconds. (60 and 100 milliseconds.)
The sustain part stays high, like an organ or a patch with a slow decay. Then the release is again kind of soft-quick, e.g., around 0.1 second rather than abrupt or particularly long.
If you take a harp patch, say for the first case, or a brass patch for the second, and lengthen the attacks (most keyboards are shorter than 0.05 secs, it seems to me, and the same for most brass that has a hard attack) I bet you could get yourself into the ball park of what attracted you to these synths.