The spirit ashes in this game aren't particularly powerful, but. The wolf trio can do moderate damage, even after leveling up and isn't able to be a tank at all because of Elden Ring Runes their relatively low health pool. What they don't have in the overall amount of damage they deal what they do make up for with their ability to be a good distractor during battles. Contact them and watch the wolves in spectral move, gnash, and circle their prey, taking them apart limb by limb as you just hang in the background. It's a great experience while giving you the time to think and consider the next step.
But, the thing I love most about the spirit of the Lone Wolf ashes is their loyalty. Certain, the summons are there for you to follow after being requested. But there's something especially endearing when you watch these big-ass creatures adrift behind you, searching for the next victim to take their claws at. They're also known to strike as a team with coordinated strikes to keep their enemies out. These wolves are helpful nearly every day and are always there for you, even if they are eventually taken away one at a time.
I've gotten so attached that I've unofficially named them after the real-life doggos from Tim Burton films: Persephone and Sparky from Frankenweenie as well as Zero of The Nightmare Before Christmas. It's just a bummer you're not able to pet them, as well as teach them tricks. But then again, they're ghosts. I guess interacting with buy Elden Ring Items them would be impossible, but maybe there's an item in the game for such a thing.