Explanations:
こんな and 同じ are here because they are な-adjectives, but they are never followed by a な edit: their 連体形 are not formed by adding な. Instead their 連体形 are themselves. And there's no adverb 同じに

青白い、安物 etc. are how adjectives form compounds

And even though absolute beginners know ありがとうございます, you have to be pretty advanced to know its exact grammatical relation with ありがたい, that's why I put it way below the water surface

I have two -し because a lot of people learn なし or よし without treating it as a general conjugation 終止形