Since I love reading almost all their works, I would recommend to read every books they have published, hugmebear!

But if you insist "only one" for each author . . . well, here they are:
5. "Muscling Through " by J.L. Merrow. I remember how wide I smiled reading the MC's 1st pov. I think it's funny and sweet and honest. I love it.
4. "Guns 'N Boys" series by K.A. Merikan. It should've read in order and I can't seem to pick one because all books in this series are awesome, enganging and twisted! Especially Dominico, one of the MCs! Okay, I admit, I love this series mostly because of Dom's character! But Dom's is this sexy, arrogant anti-hero with possessive streak and I love him. (Aaaand the other character who also had similarity of his sexy, arrogant side is Patrick of "Wake Up Married" mini-series by Leta Blake and Alice Griffith and I also recommend you to read if you havent read it because I swear Dom and Patrick must be like cousins in Black Family of "Harry Potter" series!!)
3. "Leo Loves Aries" by Anyta Sunday. I've recently read this and I couldn't seem to put it down so I had to finish it through midnight. Just. Read. This, hugmebear!
2. "Wolfsong" AND "How to Be a Normal Person" by T.J. Klune. The former is just so 'candy canes and pine cones and epic and awesome'. The other is because of 'share bears' and asexual characters. I love both so much and equally!
1. "The Executive Office" series by Tal Bauer. You must have read this series. Or if not yet, just go and read immediately. Please, hugmebear, this series is so so so brilliant and intriguing and romantic and awesome and will blow your mind! Ethan & Jack, my No. 1 of my favorite couples and you should fall in love with their romance, too! Oh, and it still has only two books so prepare for cliffhanger! They said Book 3 will be on March but I'm not sure, but still this is an action-packed romance series with some scenes will make you 'holy sh--!' and cry. Just. Read. It, hugmebear. It's also best recommended by some reviewers on its goodreads page.