Hanafi
The sources give no view for it here.
مقارنة المأموم للإمام في تكبيرة الإحرام
هل تصح صلاة المأموم إذا قارن تكبيرة إحرامه بتكبيرة الإمام؟
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
وَصْل الْمَأْمُومِ تَكْبِيرَةَ الإِْحْرَامِ بِتَكْبِيرَةِ الإِْمَامِ ١٠ - إِذَا قَارَنَ الْمَأْمُومُ تَكْبِيرَةَ الإِْحْرَامِ بِتَكْبِيرَةِ الإِْمَامِ فَقَدِ اخْتَلَفَ الْفُقَهَاءُ فِي صِحَّةِ صَلاَتِهِ. وَالتَّفْصِيل فِي مُصْطَلَحِ (اقْتِدَاءٌ ف ٢٩) .
«الموسوعة الفقهية الكويتية» (Kuwait) entry «وصال» vol. 43 p. 166
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.