Just did a Scorpion (Inferno) Vortex video off of Recapture (Spear or Minion Grab) into b3~Spear, f4~Spear, or Grab. I do different notation because I'm stubborn but here it all is in the traditional MK format:
Meterless into Vortex
114~TP, 21~MG, fj2, 4~Spear, fj2, 4~TP 31%
123~TP, Run, 21~MG, Walk Back, fj2, 4~Spear, fj2, 4~TP 35%
nj2, fj3~TP, Walk Forward, 21~MG, Walk Back, fj2, 4~Spear, fj2, 4~Teleport 32%
fj3(Air-to-Air)~TP, nj2, Walk Forward, 21~MG, Walk Back fj2, 4~Spear, fj2, 4~TP 34%
Spear, fj2, 123~TP, Run, 21~MG, Walk Back, fj2, 4~TP
214~TP, 21~MG, fj2, 4~Spear, fj2, 4~TP 36% (punish combo, not a hitconfirm)
b3~Spear, fj2, 123~TP, Run, 21~MG, Walk Back, fj2, 4~TP 26% (not a hitconfirm)
f4~Spear, fj2, 123~TP, Run, 21~MG, Walk Back, fj2, 4~TP 30% (not a hitconfirm)
1 Meter into Vortex
123~TP, Run, 21~MG, Walk Back, fj2, 4~exTP, Run, 21~Spear, fj2, 4~TP 39%
exTP, fj3~TP, Walk Forward, 21~MG, Walk Back, fj2, 4~Spear, fj2, 4~TP 30%
b3~exSpear, fj2, 123~TP, Run, 21~MG, Walk Back, fj2, 4~TP 28% (safe unless there's a 5 frame punish?)
f4~exSpear, fj2, 123~TP, Run, 21~MG, Walk Back, fj2, 4~TP 32% (safe unless there's a 5 frame punish?)
X-Ray (waste of meter, save for safe vortex)
123~TP, Run, 21~MG, Walk Back, fj2, 4~Spear, fj2, 4~X-Ray 45%
Optional ender if you prefer gounded Oki to Vortex, replace the final TP in all of these combos with b32f2 instead. If there are any damage changes it will be 1% at the most.