Owlbear is a good tank if it isnt stuck in small places.
Shield guardian is good at self heal, otherwise useless.
Scarecrow is so slow dont bother, by the time it catch up fight's over.
Teal got a good knock down, the heroic version dosent have any self heal though, if only there is the blood pack clicky.
Feywild Muse has a nice sonic boom, its kind of slow also but is offset by the ranged spell, also it can also heal but as a bard once its out of gas thats it.
Frogo is good for traps, but sometimes it gets stuck trying to disable, i have never notice if it got sneak attack but it can tank quite well.
Elleri Thistledown is ok in fights, good for restoring your spell bar, diligently heals also. People still use it on epics to restore SP. (Note the plat version is useless.)
I'll tell you about your Darling when I bring her in the room ok?