To be popular on DA you have to cater to a selected group of people or category and be highly active and post every other day. If your a really good artist it would only add to what I said above.
Here's a list of popular DA things I've came up with over the years.
Top DA fandoms
Anthro
Anime
Sonic
Pony
FNAF
Undertale
Lion King
Pokemon
Nintendo
Steven Universe
Wolves
Cats
WOW - World of Warcraft
key subcultures
brony
furries
goth
vampire
emo
DA community contributor - featured collections on front page, featured artists, daily deviations, art contest, role play, community projects, active in the forums, art raffles, contest prize giver.
Active Weekly
Anti or Hate page of fandom's - trolling, drama
YouTube famous or famous on other websites
Dedicated llama trader
Being really Good + Fan art and/or anything on this list, furries goes double
Being really Good + Specializing, robots, women, muscle men, muscle women, spooky art, feral animals
Arts & crafts – knitting, stuffed animals, Paper craft
Cute art style's like anime chibi
Mature Content
Fetish
DA designer - making buttons, animated gifs, backgrounds, banners
Fanart Comics, SFW, NSFW
Hard Core Fan - with tons of fav's and MS paint artwork
You could become popular on DA by just flooding your gallery with 10 minutes colored fanart using MS paint.