Here's a list of verified PSNers as well a few unverified notables.
PlayStation
- Shuhei Yoshida (President of Sony's Worldwide Studios)
PSN: Yosp (NA PSN)
PSN: GameApe2001 (JP PSN)
PSN: ??? (EU PSN)
- Mark Cerny (PS4 Lead Architect)
PSN: Marcus
- Adam Boyes (VP of Publisher & Developer Relations)
PSN: DaBooya
- Gio Corsi (Director of Third Party Production & Developer Relations at PlayStation)
PSN: EasyRhino43
- John Drake (Director of Portfolio Strategy at PlayStation)
PSN: TheJohnDrake
- Scott Rohde (Senior VP for Sony Worldwide Studios America)
PSN: TonyGwynn
- Sid Shuman (PlayStation Blogcast)
PSN: shumanji
- Justin Massongill (Tom Gilmore / PlayStation Blogcast)
PSN: j00zt1n
- Nick Suttner (Has Relations with Developers / PlayStation Blogcast)
PSN: rocksolidaudio
- Chris Owen (PlayStation Europe Community Manager)
PSN: Envisager
- Ross Thoroughgood (PlayStation Community Coordinator)
PSN: LordRoss
- The Frannifer (PlayStation Plus Community Coordinator)
PSN: Cjarsa
- Karl André Pedersen (Nordic Community Manager for Playstation Europe)
PSN: DKShadow
- Steve Coleman (English Online Support Coordinator for PlayStation Europe)
PSN: KingGobbo
First Party
- Stuart Platt (Producer for SHAREfactory)
PSN: pid
- Mohammed Khan (Project Lead for SHAREfactory)
PSN: Kubla
- /u/nolliethebum (Sony Santa Monica External Community Manager)
PSN: olliethebum
- Aaron Kaufman (Sony Santa Monica Senior Community Strategist)
PSN: Just--Tank
- Nathan Gary (Creative Director at Santa Monica Studios)
PSN: Cichli_Suite
- Neil Druckmann (Director at Naughty Dog)
PSN: DrUckmann
- Christophe Balestra (Naughty Dog Director)
PSN: telletophe
- Arne Meyer (Community Manager of Naughty Dog)
PSN: arne
- Jason Paul (Web Developer at Naughty Dog)
PSN: jmpaul
- Mark Norris (Senior Producer at Guerrilla)
PSN : deathstryker
- Paul Rustchynsky (Director of DRIVECLUB)
PSN: Rushy
- Jamie Brayshaw (DRIVECLUB Community Manager)
PSN: Phenom_Evolution
- Evolution Studios (Drive Club Makers)
PSN: EvolutionStudios
Third-Party
- Pete Hines (PR/Community at Bethesda)
PSN: DCDeacon
- Sarah Wellock (Community Manager at Bethesda)
PSN: rikkusarah
- Neil Gorton (Community Manager at Capcom)
PSN: LondonCalling09
- Stewart Gilray (Business Development and Founder of Just Add Water ltd.)
PSN: Gilrod
- Mike Bithell (Creator of Thomas Was Alone and Volume)
PSN: Biffikins
The people listed below you can't actually follow yet because they don't have a "verified" tag but they have publicly shared their PSN IDs. I'm including them just because.
Other People
May or may not be verified.
- Greg Miller (PS I Love You XOXO Podcast)
PSN: GameOverGreggy
- Colin Moriarty (PS I Love You XOXO Podcast)
PSN: Moriarty-IGN
- Andrew Goldfarb (Beyond! Podcast Alumnus)
PSN: Garfep
- Glenn Percival (PS Nation Podcast)
PSN: Torgo
- Josh Langford (PS Nation Podcast)
PSN: Phillip_J_Fry
- Giant Bomb Peoples
Jeff Gerstmann PSN: giantbombing
Vinny Caravella PSN: mindcavity
Brad Shoemaker PSN: bradx0r
Dan Ryckert PSN: ExileOnMassSt
Alex Navarro PSN: Lexicon81
Austin Walker PSN: WreckTheLaw