Weaversong

[The White Glint]

I don't know if this is spoiler-y, but I'm putting this here anyways.
For those who don't know, Weaversong is a Grimm Troupe charm that can be found in the Weaver's Den in Deepnest. It might have been for Hornet originally, because if you dream nail the weaver corpses, they say things (can't remember them tho). It spawns 3 little weavers to fight by your side.

Honestly, it seems like a lot of people hate this charm because the weaverlings are mostly ground-restricted. I don't hate this charm. It's currently part of my main charm set (Wayward Compass + Grubsong + Sprintmaster + Weaversong + Spore Shroom), and it's great. I can see why people hate this, but I don't think they've used it to it's full potential. It's helped me SOO much. They also took down the entirety of the Corpse Creeper room before Zote in Deepnest. If you don't really like this charm, you should try it more. It's charm interactions (grubsong + sprintmaster) make it better, obviously. They can get soul for you, and sprintmaster makes them faster. They're also really cute.
(I have the Switch version of the game, which is why I don't have it here on Steam)

[Wincent, The Hollow Knight]

I see your point.
Me personally haven't really gotten much use of it, as I was far beyond the point where their relatively low damage numbers were of use to me. So I haven't used it much myself.

[Jouster]

I used the Weavesong/Grubsong combo in the last colloseum challenge (becasue god tamer is a nightmare). I got to the final boss and died, but at the last second one of my little spider dudes smacked the god tamer and killed it and it actually registered that I defeated the trail. So props to Weaversong