@Monarcheon I'm not a composer with a name or anything; I have not shared my music to be judged yet, and I'm sure you already know all of this already. But I just wanted let you know that I understand it as well.
This is something I explained in the original post. I feel that the instrumentation is the most important factor in making something feel "fantasy" like or feel like the work was from a certain place and period in time. However, playing a blues with medieval orchestration will not stop it from sounding like jazz due to the voicings (inversions + extensions used) of the chords and progressions that create certain moods and feelings. When you have something that is somewhat ambiguous chord-wise, but has 'fantasy' orchestration, you won't get an authentic fantasy feel... you'll feel a little of the fantasy and a little of whatever else may be used.
There are certain ways we use mode-mixture, melody, ostinato, motifs, modulation, rhythmic texture, and Progressions/Cadences to create a certain type of feeling we are trying to conjure as we compose. Because of our culture, we associate certain aspects and ways of doing things in each of these categories with certain genres. And of course they overlap (Like how fantasy instrumentation (like Skyrim Elder Scrolls Theme for example) and classical instrumentation (Beethoven's 5th for example) may be the same in instrumentation but the form, feelings produced, and progressions used are very different and allow us to categorize one as classical music, and one as epic/battle/fantasy music. I feel that the melodies and chords create the feelings produced and that the chords and melody help to form and mold each other. So as I feel that I have a decent or firm understanding the other categories I am now turning my focus to the chord progressions.
We associate certain chord progressions with certain genres as we hear them in many pieces of that genre. They might fit in all genres or maybe some genres and not others. The fact remains that it is commonly used within the genre or subgenre and it is there. If it is something that my ear hears and makes me say, "this is a fantasy piece" or "this could be a fantasy piece" in my head just by hearing the chords played straight or even arpeggiated on any instrument, then I know that progression belongs to the fantasy genre as well as others, most likely. And of course fantasy has it's subgenres like the mystery-type peices associated with magic or nature; or maybe it's calm peaceful, mellow, or 'proud' type music associated with a character, town, village, or adventure. I'm looking for chords that bring out these feelings, emotions, and relative experiences just by hearing them.
I hope this explains my stance well enough. I'm not saying that progressions make the music, but they help make the music and they (were completely, at one time) they are what I understand least about what we associate with fantasy music and different types.
Of course, as I've said above, I made progress but I haven't completed going the the sub-genres I want to hit. So I am looking for people to give me music songs and progressions that they associate with fantasy and compare it's features [within each category] to others of the subgenre(s) I feel it fits in. This way I can determine what makes it fantasy. Thanks, and I'm still looking for more :)