In order for the meta political milieu to function the various rulers need to marry foreigners at times, and so the list of viable hybrid races needs to be expanded beyond the usual Half-Elf and Half-Orc.
So, in the Tòlanar setting the following races can interbreed: Bugbears, Dwarves, Elves, Goblins, Halflings, Hobgoblins, Humans, Orcs, & Orogs.
Basic stats for the crossbreeds can be found here: Half-Bugbear, Half-Dwarf, Half-Elf, Half-Goblin, Half-Halfling, Half-Hobgoblin, Half-Orc, Half-Orog. All of these are very generic, except for the Halfling one, which has each variety of half breed detailed separately, which will have to be done for the other races.
I have not decided yet if all of these races can interbreed with all the others or not yet, but humans and orcs certainly can, as can all the goblinoids with each other. In addition male minotaurs can interbreed with female humans, the result always being a minotaur.