Current structure sucks ass. I hope someone would contribute and earn their honorable appreciation😉

Structures that needs help are listed below:

• hateno_village_goddess_statue, rito_village_goddess_statue, kakariko_village_goddess_statue:
  They are loose copies of their BotW counterparts, and I would appreciate it if someone could pull out better looking alternatives while still preserving connections to BotW counterparts. You may build entire tavern out of hateno village structure, for example.
• gerudo_village_goddess_statue is sort of copy from BotW... But they didn't got a shit in base game either. So yeah. You may build completely original shits.
• underground_horned_statue is a pocket of air with some Horned Statue and burnt campfires. Not sure if it needs revision, but if you'd try then sure.
• tarrey_town_goddess_statue is, well, a copy of Tarrey Town pond, before getting remodeled by pesky sapients. I'm not sure this needs revision as well, but I don't mind experiments.
• nether_horned_statue is a random piece of buildings that are scattered in nether. They are made intentionally crude.
• I don't remember about nether_goddess_statue but pretty sure it's not used. I considered spawning Goddess Statue at nether like Horned Statue, and placing Goddess Statue at nether fortress (if it's even possible). Maybe if someone makes banger nether Goddess Statue building then I might add them to worldgen.
• Also Goddess Statue building for snow village would be nice, since currently Goddess Statue doesn't get generated in snow village. I think we're out of buildings to copy at this point, so I assume we would need an original building...?

Other "village horned statues" are small structure to generate Horned Statue in village at reduced rate. I don't think it should be changed.

Would love to help, I encountered an underground_horned_statue in the end and I can't see anymore.
Jokes aside, I never built a structure for a mod, what do you exactly need ? I never used structure blocks but I can check google if this request is still topical