You should've spend more time on your guide, maybe learn some coding. Instead of writing things like Death Sentence you could use Death Sentence without the SPACE to make it look like Death Sentence. The cheat sheet are confusing because you are listing Ability Power items and only one single Support item. In my opinion the best build for Thresh are items focusing on being unkillable and assisting the enemy team, not like an Ap Assassin. Don't use colors too much in the guide. I'm not voting this guide because I don't know how I feel about it :p

As Ive said its just the way Ive built and had the masteries and runes. I know the text needs adjustements and color. And its the 1st guide Ive ever made. Ill make some adjustments to it sooner or later and make it better.

Your first two builds are nearly nonsense, sorry. Your "Tanky Support" build is suboptimal too because Athene's Unholy Grail is no real option and your cheat sheet is messed up. Masteries should be more about the defense tree like 0/9/21 or so.

Runes need adjustment, items are just wrong, masteries are okay, your guide lacks colors and it will bore the readers. Just take my advice and put more effort.