I really like the Wonders that were destroyed/forgotten, like Etemananki, so here are a couple with some unconventional civ choices.
Hebrews - The Second Temple
Sardinia (Nuraghics? Sherdan?) - Red Nuraghe
Tartessos - Cancho Roano
Pueblo - Chaco Canyon
Palmyra - Temple of Baalshamin
Mamluks - Al-Omari Mosque
Also I definitely think we can have less "impressive" wonders, depending on when and where they were built. Stonehenge isn't that complex compared to other Wonders, but is absolutely an accomplishment for its time and location.
Hebrews - The Second Temple
Sardinia (Nuraghics? Sherdan?) - Red Nuraghe
Tartessos - Cancho Roano
Pueblo - Chaco Canyon
Palmyra - Temple of Baalshamin
Mamluks - Al-Omari Mosque
Also I definitely think we can have less "impressive" wonders, depending on when and where they were built. Stonehenge isn't that complex compared to other Wonders, but is absolutely an accomplishment for its time and location.