This post can help you, if you like the face from PersonA & body from PersonB been put together (Patreon)

Here is the easiest way by far to combine the 2 parts(Head & Body)from literally every look you've got in hands. If you already know this way, just ignore it.

(All characters I've shared here have been through the Step1&2)

 ~Step 1

Download the plugin(https://hub.virtamate.com/resources/head-xyz-position-fix.1824/ )& put it into the AddonPackages folder.

Make XX-Head & XX-Body using this plugin(https://hub.virtamate.com/resources/morph-merger.142/  )Notice: turn off all 8 selections in the Auto Behaviours panel. T-Pose is highly recommended.

Load the plugin & follow the steps.

Head & Body are then separated, ready to be combined with full customization.

~Step 2

Reset your character by pressing the Reset Look(red button) near the top right corner of the panel Control & Physics 1.

Save Presets of Skin textures & Hairstyles from the skins & hairstyles you like & load it on this brand new combined character. (To be discussed in the next Just In Case post)

Others like Iris Materials can also be very important.

~Step 3

Adjust the XX-Head, XX-Body & the Head_XYZ_Position_fix(Crucial) as you wish. Then you get all the different results.

Above I've presented to you the combinations I tested in a short time. You can even try many more complex combinations with many more XX-Head & XX-Body morphs involved.

They comes in 4 groups to show the difference or the way they are combined.

Group A(I want the head of 85 & body of default figure combined)

1)1.0 * Girl85_Head + 0 * XYZ(neck problem found)

2)1.0 * Girl85_Head + 0.537 * XYZ(neck problem fixed)

Group B(I want the head of 85 & body of 11 combined)

3)1.0 * Girl85_Head + 1.0 * Girl11_Body + 0 * XYZ(a little neck problem found)

4)1.0 * Girl85_Head + 1.0 * Girl11_Body + 0.035 * XYZ(neck problem found)

Group C(I want the head of 85 & body of 24 combined)

5)1.0 * Girl85_Head + 1.0 * Girl24_Body + 0 * XYZ(neck problem found)

6)1.0 * Girl85_Head + 1.0 * Girl24_Body + 0.365 * XYZ(neck problem found)

Group D(for comparison)

7)1.0 * Girl85_Head + 1.0 * Girl85_Body + 0 * XYZ(for comparison)

8)0 * Girl85_Head + 0 * XYZ(for comparison, default head & body with new textures & hairstyle)