In my personal opinion, this template looks like this:
1) Castle
2) Dungeon
3) Tower
4) Rampart
5) Inferno
6) Fortress
7) Necropolis
8) Castle with hippos

Castle – of course, the archangels are good, and the knights on horseback deal decent damage.
Dungeon – black dragons, immune to all magic; there are heroes with the Meteor Shower spell (very useful); also, there is a portal and a level 5 guild.
Tower – shooting titans of level 7, a guild up to level 5, and heroes with the Chain Lightning spell.
Rampart – I just like the gold dragons.
Inferno – archdevils and magogs; the rest are weak, except maybe the efreets.
Fortress – only the gorgons are strong; the others are mediocre.
Necropolis – annoying vampires and liches, and dark knights.
Barbarian – so-so.