Going back to the original question - do you obsess about a particular historical period and want to do everything you can to bring every detail of it to life? Then you may be inclined to historical fiction; or do you simply enjoy the period and want to use some part of it as inspiration? Then you may be more inclined to historical fantasy, or simply fantasy.
I've written something that I think of as historical fantasy. It doesn't actually contain magic though. I think it's more the "want to use some part of it as inspiration" that's led me down the fantasy route, plus I've amalgamated aspects of two different historical periods. Plus it lets me leave out the things about my period of inspiration (Ancient Greece) that I don't want to use.
There's also the point that I could spend decades of my life researching Ancient Greece and still feel I might be getting things wrong...