"Calling a song 'Like Mariah,' and building that song around an iconic vocal hook from "Always Be My Baby," is a risky move for any new pop act, but Fifth Harmony admirably pulls off the sunny R&B vibe and falsetto runs of the pop icon they're honoring on the track. The Tyga interjections sound unnecessary here, but expect 'Like Mariah' to become a fan favorite when 5H performs the song live.", according to Jason Liphutz of Billboard.
"For this song the girls decided to pay tribute to one of the great pop divas, Mariah Carey. The song opens with a sped-up sample of Mariah’s song “Always Be My Baby” and thankfully, it doesn’t overpower the song. It’s a welcomed balance between a bit of the classic and the new. Sometimes when artists incorporate samples of classic songs it tends to make me want to sing the original, but I have to give props to the girls for mixing all the elements seamlessly; it’s fun and bouncy, with a touch of the classics and a few smooth rhymes from rapper Tyga. If I were Mariah, I’d be impressed.", according to Rebecca Mattina of andPOP.
"When I heard that the girls were sampling Mariah Carey’s “Always Be My Baby” on their track 'Like Mariah,' I was bracing myself for the worst. While the girls are talented, you can’t mess up on a legend’s track, especially with a single as career-defining as “Always Be My Baby.” “Your loving takes me higher / you set my heart on fire / when you touch my body / got me singing like Mariah.” I was waiting to hear whistle tones and Mariah-esque vocals, but 5H stayed true to their voices, and the track is solid. There are very few times when a rapper adds to a pop track, and featured rapper Tyga doesn’t add much other than an opportunity for the girls to be heard by more ears.", according to Marcel Jeremiah of ppcorn.