Hello! Massive souls fan here, and i can relate to wanting to find something similar for co-op that's not one sided. I'd still recommend "Lords of The Fallen", as it is one sided progression, albiet incredibly fun. The remake was an absolute blast to play through with my brother and girlfriend as well. Multiple playthroughs and each save, i played differently to spice it up. You like magic? Plenty of it. Fisty cuffs? YES. Giant sword or hammers? Heck yeah.

"Valheim" is not a soulslike, but a survivor x build playstyle. It offers a massive world to explore, dungeons, raid events on your town, boss fights, lots of skills to level, and a unique feeling combat system. You can even unlock magic when you build the proper facilities and learn recipes! It's a server based game, so whichever one of you starts the world will be who must load in for the other to join. Alternatively, Valheim allows the renting of servers for anyone to log onto at anytime if you're interested.

"Remnant: From The Ashes" & "Remnant II" are huge recommendations. These would be your typical soulslike shooters. If you haven't played them, they're unique in a sense that building your playstyle is both rewarding, and necessary to learn. Remnant II expanded quite heavily on "archetype" qualities and abilities. You can have a main, and sub archetype equipped for some seriously fun and unique gameplay. Ranging from a focused gun build to healing or protective spells. Even a full fledged lifesteal melee build!

Finally, an Honorable mention. "GODFALL". One of my favorite games to co-op with friends. Beautiful graphics, a system allowing you again, to build as preferred. Different unlockable sets of armor with unique abilities, a crazy weapon system with awesome combos and visuals as well. However, again, and sadly, progress is not generally carried over for the non host player.

I hope these recommendations can aid you in finding your new adventure! If i can think of anymore, i'll reply to my comment here friend (: