Does adding DLC create more new class uniques?

[Relic]

Deleted all the DLC was getting annoyed in nightmare with always finding some OP unique (or boss) by tier2 dungeons.

Tried a couple runs, the cornac berserker easily tore through any unique and was able to beat the rand bosses it found without too much problems. Only those with skate really posed any annoyance.

This is very different from the runs with the DLC in it wherein you would usually run into a very powerful gunslinger snake in the tier 1 dungeons that pretty much no r/c combo had enough hp to survive effectively.

Is there some way to see if there are a lot more DLC class uniques generated than basic uniques?

I am getting the feeling that it tends to generate a bit more of the new classes or EoR classes than normal but not sure how to check it out.

[HousePet]

There is a modifier attached to many of the classes in the base game that makes them less likely to be applied as a class to a RNG boss.
No DLC class has this modifier on them.