I did see a brochure for their tip cleaners, and you are correct, the FT-700 is tagged for oxide removal. The others, more for light cleaning and excess solder removal.
The other models all seem to come with very sparse resin/synthetic-based brushes, but do offer (equally sparse) metal brushes as replacements.
My feeling was that for the limited effectiveness of the lighter models (just my opinion, based on videos), I would get similar results with the usual brass wool and sponge method. The reason that I went with the YIHUA 200C was because the metal brushes were more in line with those in the FT-700, and "might" be able to deal with my occasional oxidation issues. I guess we'll find out soon; the shipping says "out for delivery", haha.
If you only deal with leaded solder and work at reasonable temperatures, the oxidation issue really shouldn't be a problem.