They shouldn't, no. I have heard of frogspawn being the odd one out of the bunch but I have a hammer and torch right near each other, maybe 2 inches apart max, and have had no issues.
Torches next to torches are generally ok but they are still fighting for space technically. Hammers and Torches, the Torch can sting the hammer, not always, but its a "50/50" shot. Hammers and Frogspawn are the 2 euphyllia that can touch with little to no issue most of the time.