The best alternatives to Macmoji are Rocket, Command, and Alfred Emoji Pack. If these 3 options don't work for you, we've listed a few more alternatives below.
Emoji + Color is an iOS app that literally sorts every single Apple emoji (that's 1816!) by its color. 💜 Choose from up to 16 colors (yes, multi-selection is supported) 💚 Set a default skin tone for all emoji with skin tone 💛 Copy and paste anywhere