In the full spell details they are alphabetical. Not divided by level.i'm for spell lists in class description, but having both is like 5 pages extra so maybe both could be worth doing.
Also, this is another topic but it's directly connected;
In full description part of spells; in PHB they are sorted by alphabet, all levels together.
Could you please sort them by every level separately?
Cantrip section: all cantrips full descriptions by alphabet.
1st level section: all 1st level spells full descriptions by alphabet.
etc...