Great growing!
With the close up shots, I cannot see the difference in the two plants either but they sure are gorgeous! Usually
Florist Kalanchoe (Kalanchoe blossfeldiana) has an upright, branching habit but if the one growing more as a "vine" is receiving insufficient light, it could be "stretching", trying to reach the light ... or, it's possible that there's a trailing variety I'm not aware of.