John Mayer posted his PPG Wave 2.2 synth in an Instagram story, with the quote:

How to get fellow nerds to DM you

Calvin Harris is shown using the PPG Wave 2.2 synthesizer in an Instagram post related to his track "Slide" featuring Frank Ocean and Migos.

His setup can be seen with his keyboard tech Tony Geranios in this image.

In the YouTube video "Behind the Track｜« Neverender » by Justice & Tame Impala" by Mix with the Masters, Gaspard Augé mentions that he used a PPG Wave 2.2 synthesizer for his solo project. Justice appreciated the synthesizer so much that they acquired it and incorporated it into their fourth studio album, Hyperdrama. At the 1:51 mark, Xavier de Rosnay notes that many of the sounds on Hyperdrama originate from this synthesizer. Although the synthesizer is not named verbally, the label "PPG Wave 2.2" is visibly identifiable on the front right side of the instrument at 1:59.

In this photo from 1983, Stevie Wonder is spotted playing a PPG Wave 2.2 synthesizer. Possibly appears on Woman In Red soundtrack.

The PPG Wave 2.2 is featured in the "Studio Equipment List" on Vince Clarke's website.

List of equipment used by Klaus Schulze, from the February 1993 issue of Sound on Sound:

4x Akai S1000PB (32MB) 2x Akai S1000KB (32MB) Akai S900 Akai S612 Akai S7000 Moog Modular CIII 2x Moog MiniMoog Studio Electronics MIDIMini Mellotron Yamaha CS80 Yamaha CP70 Yamaha TX81Z Yamaha SY99 Korg M1 Korg M1 EX Korg T1 Korg T3 Korg DVP1 Roland U110 Roland U220 Roland D50 Roland S50 sampler & monitor Roland Planet S & editor Roland Super Jupiter & editor 2 Roland TR505 Roland Octopad Roland JD800 Roland Super JX10 4x Hohner HS2/E sampler 5x Hohner HS1/E sampler Hohner HS1KB sampler Waldorf Microwave GDS computer synth Misc. Crumar keyboards Fairlight CMI Series II SCI Prophet 2000 SCI Prophet 2002 Emu Proteus/2 Emu Proteus/3 World Emu Emulator II Kurzweil K1000 Kawai K4 EMS Synthi A PPG Wave 2.2 Linn 9000 4x Oberheim DPX1 Yamaha RY30 drum machine Sonor timpanies and octo toms Paiste gongs and cymbals Martin 12-string guitar

Accoring to this article Roland Orzabal used a PPG Wave when recording Tears For Tears classic album Songs From the Big Chair

Ulrich shows us his PPG Wave at 3:56 in this studio tour with MusicTech. Ulrich says "It's a bit difficult to see: the PPG Wave. Another digital classic." This accompanying article confirms this as the 2.2 specifically.

Edgar Froese of Tangerine Dream with his Wave 2.2 and Waveterm around the time of their European Tour in 1986.

Sleazy mentions this classic synth in the Keyboard Magazine interview from 1987.

During the "Bark At The Moon" album era, Don Airey stated: "I have two keyboard sets, one is over here, and one is always in the States. There's a CS80 which is the basic keyboard, a MiniMoog, the Roland Vocoder Plus, Yamaha CF70, Oberheim OBXa, and a MemoryMoog. To them I'm adding a DX7, another MemoryMoog (because I use it so much), and the Wave 2.2 and the Waveterm." This confirms that Don Airey used the PPG Wave 2.2, as documented in the article "Wizard Of Oz" (Electronics & Music Maker, Feb 1984).