Hands down Cotton yarn is the best yarn for Crochet Dishcloths! I also have linked a few of my favorite cotton yarns in this post.
Farm House Washcloth Crochet Pattern – Mama In A Stitch
All-Purpose Waffle Stitch Crochet Dishcloths - I Can Crochet That
Mama's Easy Crochet Dishcloth - Crochet 365 Knit Too
How to Crochet a Washcloth + Free Crochet Dishcloth Patterns - Persia Lou
All Washed Up Crochet Washcloth Pattern - Crochet 365 Knit Too
The Best Yarn for Crochet Dishcloths + 3 Crochet Dishcloth Patterns
35 Free Crochet Dishcloth Patterns - My Crochet Space
21 of the Best Free & Easy Dishcloth Crochet Patterns - OkieGirlBling'n'Things
The Absolute Best Yarn for Crochet Dishcloths + Free Patterns - OkieGirlBling'n'Things
Quick And Easy Crochet Dishcloth Pattern
10 Easy Dishcloth Free Crochet Patterns — Blog.NobleKnits