Do you mean that you get the unknown variant message when trying to add the game to ScummVM?
That's right.
We indeed have detection for those two games already, but they may be for different versions than the ones you tried to add.
They are the latest versions I've released (v1.1 for
Heartland Deluxe, and v1.0 for
Unbound), which are pretty much the most widely available ones (especially if they were downloaded through the links on the AGS database). I'd be surprised if an earlier version or either was used, but it's certainly not impossible.
EDIT: Come to think of it (nearly thirteen years later!),
Unbound v1.0 is the only version available, as an earlier version was never publicly released.
In such a case the message you get when trying to add the game to ScummVM should tell you to report some information to us so that we can add detection for that variant as well.
No problem.

Heartland Deluxe V1.1:
The game in 'Heartland Deluxe v1.1\' seems to be an unknown game variant.
Matched game IDs for the ags engine: heartlanddeluxe
{"Heartland.exe", 0, "0829f8e184ed6a4bf36b14ba42003a67", 6701875},
EDIT: Actually,
Unbound (v1.0) is recognized correctly and runs in the latest build of ScummVM (2.3.0git15028-g78c48fd9df (Apr 10 2021 05:31:24)), though it crashes when loading .mpg files. Don't know why it wasn't correctly recognized last time, though I wouldn't put it past my own technical ineptitude.

Like I said, it's not impossible that v1.0 of
Heartland Deluxe would also be recognized correctly, though it's almost impossible to find for download (every website I checked that currently features the game is hosting the v1.1 version). In fact, I can't even find a copy to test myself. It may have existed on the now defunct AGSArchives, but it's not available in the archive torrent, so maybe not.
TLDR:
Unbound v1.0 is recognized and runs.
Heartland Deluxe v1.1 is recognized, returns an unknown variant error (see above), but runs correctly under the fallback option.