All PQI Combinations! - please add any missing

This is the list of known PQI combinations. Please help by posting any other combination you encounter!
Tier 1
Fighter - Elf, Orc
Thief - Goblin
Priest - Elf, Gnome
Wizard - Halfling, Orc
Tier 2
Berserker - Elf, Gnome
Rogue - Goblin, Halfling
Monk - Elf, Goblin
Sorcerer - Dwarf, Goblin, Halfling
Tier 3
Warlord - Dwarf, Halfling
Assassin - Dwarf, Halfling
Paladin - Dwarf, Orc
Bloodmage - Goblin, Halfling
Explorers
Tinker - Dwarf, Elf, Gnome, Goblin, Halfling, Human, Orc
Crusader - Dwarf, Elf, Gnome, Goblin (?), Halfling, Human (?), Orc
Transmuter - Dwarf, Elf (?), Gnome (?), Goblin (?), Halfling, Human, Orc
Note on Explorers guild combinations: we believe all races are applicable for all three explorer classes; however, some combinations (marked with a (?) ) are not confirmed.
Audit Zeppelin
Chemist - Human
This is a cross-post from the How does the PQI algorithm work? thread, because I wanted to make it concise and ask for community help to flesh out the missing combinations. Big credits go to Lujo for his Another bloggy playthrough diary... topic, which I used to put together the initial list.
PQI logic in a nutshell:
Once the list is complete, I would propose to write up strategy tips on the wiki for each combination, ideally considering valid approaches for potential badges that can be asked by the PQI.
Tier 1
Fighter - Elf, Orc
Thief - Goblin
Priest - Elf, Gnome
Wizard - Halfling, Orc
Tier 2
Berserker - Elf, Gnome
Rogue - Goblin, Halfling
Monk - Elf, Goblin
Sorcerer - Dwarf, Goblin, Halfling
Tier 3
Warlord - Dwarf, Halfling
Assassin - Dwarf, Halfling
Paladin - Dwarf, Orc
Bloodmage - Goblin, Halfling
Explorers
Tinker - Dwarf, Elf, Gnome, Goblin, Halfling, Human, Orc
Crusader - Dwarf, Elf, Gnome, Goblin (?), Halfling, Human (?), Orc
Transmuter - Dwarf, Elf (?), Gnome (?), Goblin (?), Halfling, Human, Orc
Note on Explorers guild combinations: we believe all races are applicable for all three explorer classes; however, some combinations (marked with a (?) ) are not confirmed.
Audit Zeppelin
Chemist - Human
This is a cross-post from the How does the PQI algorithm work? thread, because I wanted to make it concise and ask for community help to flesh out the missing combinations. Big credits go to Lujo for his Another bloggy playthrough diary... topic, which I used to put together the initial list.
PQI logic in a nutshell:
Once the list is complete, I would propose to write up strategy tips on the wiki for each combination, ideally considering valid approaches for potential badges that can be asked by the PQI.