Hatchet and Chains was played straight in their scene last year, and there's nothing so far indicating that'll change for this year. And the Terrifier series regrettably avoids being fun, so I don't see that being a horror comedy house either.
And honestly, looking at the other houses both confirmed and rumored...
Jason Universe - Straight up slasher.
WWE - The main thing mentioned for this house is psychological.
FNaF - Played serious.
El Artista - Clearly traditional haunted house horror, no funny business.
Dolls - Any story that's been rumored for this one doesn't sound like a horror comedy to me, it's reading more twisted.
Vikings - This one is admittedly a big ??? considering not much has been said about this house save for the rumor it's gonna' be cold.
Graveyard - Don't see them going in a comedy direction for this one.
Really, Fallout is probably going to be the horror comedy house.