I tried all types you named (Utevo Res, Animate Dead Rune and Convince Creature Rune) and I came to following conclusion:
- Wolf = Convince Creature Rune
- Skeleton = Animate Dead Rune
- Demon Skeleton / Fire Devil = Utevo Res
First I tried Wolf and Skeleton (because you can only control two creatures at once).
- I was walking around 10 sqm straight east (closely out of their sight) and they both followed.
- I was walking around 20 sqm straight east and sometimes both followed and sometimes only one followed (but did not poof)
- I was walking around 30 sqm straight east and they did not follow (sometimes one poofed, sometimes both and sometimes non).
- I was walking around 40 sqm straight east and non followed and they poofed.
Then I tried Fire Devil and Demon Skeleton:
- I was walking around 10 sqm straight east and they both followed.
- I was walking around 20 sqm straight east and they did not follow (but did not poof).
- I was walking around 30 sqm straight east and they did not follow (sometimes one poofed, sometimes both and sometimes non).
- I was walking around 40 sqm straight east and non followed and they poofed.
I tried these several times and it sometimes changed around the 20 - 40 sqm mark. I think it depends on how fast you are and I was counting my steps so I was not that fast like I would be usually (my speed is on 655). I also tried to step as fast as I did before.
My conclusion: It does not depend on the different types of summons, it only depends on how fast and how far you go away from them.
EDIT:
I tried using parcels and I needed exactly 30 steps and they poofed (from the sqm you see on the screenshot).