Just preordered these (Hori Split Pad Pro -$50 ). Pro controller style joy cons, with programmable rear buttons. Fortnite on joycons are very uncomfortable so this looks great option to play handheld. :
The Verge - Hori's Split Pad Compact adds a pop of color and customization to your Switch - Steam News
Best Nintendo Switch Controllers for Fortnite - CodeWithMike
PEELY VS MEOW 5484-2202-0757 By Hori - Fortnite
ARIANA VS JAMES [ hori ] – Fortnite Creative Map Code
توییتر \ 2 Old 4 Gaming ❤️ #PSVita در توییتر: «#Fortnite plays much better on #PSVita with the Hori Remoteplay grip. Check it my video to see it in action. https://t.co/VO6EgErh49 https://t.co/Skh4buv63W»
Top Level Up Deathrun 3337-4200-5325 By Hori - Fortnite
Fortnite - 9to5Mac
Review] HORI Horipad FPS Plus for PS3, PS4, and PC — Game Controller Reviews
Amazon.com: Nintendo Switch Wireless HORIPAD (Gray) by HORI - Officially Licensed by Nintendo : Everything Else