I'll try to get us back on track with my usual brand of simple, "why don't you already know this?" brand of question:
Are there any general rules on what patterns are "correct" for types of clothing? For example, I sometimes see PoW checks on both jackets and ties. Unless I am mistaken, it seems popular for both items, but for other patterns, like houndstooth or herringbone, I recall reading advice that they aren't appropriate for some garments.
So, can they be easily categorized into jacket, suit, or tie categories? Dog's tooth, gingham, glen check, shephard's, etc, etc, etc.