Hanafi
The sources give no view for it here.
موضع ذبح الهدي
هل يجوز ذبح الهدي في مكة والحرم، أم يُفضَّل ذبحه في منى؟
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
ذَبْحُ الْهَدْيِ يَوْمَ النَّحْرِ ٣ - يَجُوزُ ذَبْحُ الْهَدْيِ فِي مَكَّةَ وَالْحَرَمِ، لَكِنْ فِي مِنًى أَفْضَل، إِلاَّ مَا يُذْبَحُ فِي فِدْيَةِ الأَْذَى فَيَجِبُ ذَبْحُهُ فِي مَكَّةَ عِنْدَ الْجُمْهُورِ. وَلِلتَّفْصِيل انْظُرْ مُصْطَلَحَ (حَرَمٌ ف ٢٦) وَ (حَجٌّ ف ٨٢) وَ (هَدْيٌ) .
«الموسوعة الفقهية الكويتية» (Kuwait) entry «منى» vol. 39 p. 58
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.