Ok, because you asked so nicely, I will try to answer you:
"first level two colored shop root warriors" don't regenerate:
A creature gets to regenerate VE if at the beginning of the fight (or during) it has some "regeneration" applied on it.
Now, as you applied 0% influence, that means that your creatures don't get additional "regeneration" from your own account. 0 Regeneration = 0 VE regenerated
So, the different for the other creatures to regenerate is a mystery :) , either creature stats or tokens or ... something else. Try to find out for yourself.
Now, here is a spoiler on the stats for the "first level colored shop root warriors": Power , Defence , Initiative
If, after the above explanation, you still can't understand why your other creatures get regenerated ... you should try and post some more information on those magical creatures & fights, maybe a fight log.