Hanafi
The sources give no view for it here.
قراءة المأموم في الجهرية
ما حكم قراءة المأموم خلف الإمام حال جهر الإمام، وهل تبطل بها صلاته؟
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
(فصل) : إذا قرأ حال جهر الإمام كره ذلك ولم تبطل صلاته. خلافا لبعضهم. لأن القراءة خلف الإمام لا تبطل صلاة المأموم كحال الإسرار. [وضع اليمنى على اليسرى]
«الإشراف», al-Qadi Abd al-Wahhab p. 241
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.