Who are the top digital video influencers under 21?

Engagement is everything when it comes to being a top creator.

That’s what tech company Zefr found when compiling a list of the top digital video influencers under the age of 21.

SEE ALSO: 15 people made famous by the Internet in 2015

“Social media is a dynamic landscape where data is king in understanding trends and projecting what’s important is critical for brands to navigate the future,” Tom Galido, head of product marketing and data at Zefr, told Mashable.

Zefr, which is Los Angeles-based, tracks and ranks the trending engagement of the top digital influencers across thousands of data points to find out who is the most influential.

The list of 20 digital video influencers was compiled using trending engagement data that tracks and predicts how much fan interaction an influencer will drive on future posts.

“We measured across several platforms –- Facebook, Instagram, Vine, YouTube,” Galido said. “Some rank influence based on total lifetime followers and views. That’s misleading. Really, what brought these top influencers together is looking at how they are trending over the last 30 days, and looking at how that activity will project to the future.”

Here’s a look at the top 5 on Zefr’s final list. For more, look at the company’s full post.

1. Rachel Levin

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Levin, 20, landed the top spot on the list for her YouTube DIY beauty channel, RCLBeauty101. She has about 5.5 million subscribers whom she lovingly deems “Levinators.”

This is so cool! The LEVINATION has the most engagement! https://t.co/1u92tIJYvt you guys are the best

— Rachel Levin (@rclbeauty101) December 9, 2015

2. Bethany Mota

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Mota, also 20, has become a household name with her lifestyle channel, which boasts 9.6 million subscribers.

Earlier this year, she was among the three YouTubers who interviewed President Obama at the White House.

The California native first began vlogging make-up and fashion tips on her YouTube channel in 2009. Last year, Business Insider estimated she makes $40,000 a month on her videos. She has also been a contestant on Dancing with the Stars.

3. Meg DeAngelis

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Though DeAngelis began by making cheerleading videos, her channel has evolved into a place for go-to lifestyle content ranging from hair tutorials to fashion videos.

Now “MayBaby” has more than 4 million subscribers to her channel.

The 20-year-old was born in Canada, grew up in Europe and currently resides in California. She also has a PBTeen Line.

I just watched the commercial for my PBTeen line and…………….hotline bling pic.twitter.com/cCwocFLy82

— Meg DeAngelis (@MegsDeAngelis) December 4, 2015

4. Kian Lawley

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Though he claims on his Twitter page that he’s “not that interesting,” the 20-year-old’s comedic sketches and vlogs have garnered him enough attention to get him the No. 4 spot on the list.

He currently has a comedy channel with fellow YouTuber Jc Caylen titled “KianAndJc.” Lawley also recently starred in Supergravity Films’ The Chosen, a horror-thriller feature.

5. Nash Grier

The 17-year-old, who rose to fame with his six-second videos on Vine, is a rising star in the digital space. In addition to shorter videos, Grier pursues creative projects with longer videos on YouTube and music video directing. Most recently, he starred in Fullscreen’s The Outfield, alongside fellow popular digital star Cameron Dallas.

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