Hanafi
The sources give no view for it here.
جريان الربا في الوزنيات
هل يجري الربا في الأشياء الموزونة؟
Each school’s answer
In our wordsHanafi
Not stated in the sources
Maliki
Not stated in the sources
Shafi'i
Not stated in the sources
Hanbali
Not stated in the sources
The texts
ج - رِبَوِيَّةُ الْوَزْنِيِّ: ٥ - اخْتَلَفَ الْفُقَهَاءُ فِي جَرَيَانِ الرِّبَا فِي الْوَزْنِيَّاتِ بِنَاءً عَلَى اخْتِلاَفِهِمْ فِي عِلَّةِ الرِّبَا فِي الْوَزْنِ الْمَنْصُوصِ عَلَيْهِ، وَتَفْصِيل ذَلِكَ فِي مُصْطَلَحِ (رِبًا ف ٢١ وَمَا بَعْدَهَا) .
«الموسوعة الفقهية الكويتية» (Kuwait) entry «وزني» vol. 43 p. 138
From the schools’ own books
Maliki
The sources give no view for it here.
Shafi'i
The sources give no view for it here.
Hanbali
The sources give no view for it here.
What is «in our words» is our standard wording; the books’ texts stay as they are.