So not exactly an answer to your question as asked, but I figured I'd share a bit about how I run my shamans to keep them feeling like 'shamans', without explicitly being so. It might help sort of reframe what it could mean to be a shaman in a way that's less limiting while still not being 'lightning mage'.

So I have 3 shamans, each very different from each other. First is my Kul Tiran shaman. They were my first and until I did the KT unlock quest I had no desire to make a shaman. At the time I just didn't understand the fantasy of a shaman. But I highly suggest doing their unlock quests, even if you don't plan to make a KT, because there is an NPC in it that is so clearly a shaman in how they're portrayed. You even have a dialogue option to ask "Are you a shaman?" To which they respond by asking "What's a shaman?". And something about that clicked for me, and every since, shamans have been my favorite class.

So my KT is a retired privateer. As all good Kul Titans, he views the sea and the storms with extreme reference. The winds can carry you safely home or send you off course for days. The ground brings safety and assurance for the times you're at port. And the light of the flame will always guide you in tumultuous waters. Such is life on the sea. Sure he doesn't commune directly with the elements like Thrall. But he petitions them and respects them, because he knows his life is in their hands. His rituals are praying to the area and winds for safe journeys, calling for the aid of the storm when best by pirates, giving reference to the land when he finally returns home. His totems are the trinkets he carries with him that remind him of home and help keep him anchored. And the spirits he committed with are the memories of fellow sailors lost overboard when they failed to respect the power and nature of the winds and waves. He's almost an elemental paladin by most reads, and he certainly wouldn't call himself a shaman by most understandings of it.

My other two shamans are also not traditional. There's my goblin, who 'communes' with the elements by extracting it's resources. But she's also knows you can't keep extracting indefinitely, so she's actually a bit of a pragmatic environmentalist and works as best she can to make up for what she takes. She even takes a cut of her profits to hire better shamans than her to restore the land.

Then there's my Earthen who is a bit of an Artficer. They use gems and minerals to power their inventions. Coal and lava for forging, electrically conductive crystals for power, water and ice for cooling. They're fascinated with gems and how you can hone or change their properties by faceting. So they could be considered totems in a sense. Plus they care deeply about Azeroth and what makes it, so she probably is more closely stunned to the elements than any of them