general rules:
no stonies can touch anything else
all softies can touch other softies
no big anemones can touch anything else
then there are exceptions. a lot of the LPS from dirty water are not aggressive and the euphyllias and caulastreas fit in with that
they can touch some softies and certain euphyllias can sometimes touch (you have a 50/50 chance a froggy won't fight with a hammer)
the guaranteed battle would be if the caulastrea touched either the hammer or the froggy
RBTA's are mellow anemones, so they go case-by-case.
my LFS has a big RBTA wedged happily in with Lemnellia and clove polyps - nobody burns nobody so, you can't say for sure until you see for yourself.
I pretty much let everything touch everything else at least once to see what happened until I picked up the trend.
The very very best total annihilation was when the xenia grew on the Hydnophora. It literally got smoked and dissolved and blew away like smoke once the Hydno had enough encroachment and broke out the dreaded filaments of doom
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