In this photo taken from International Musician & Recording World March 1984 issue, Nik Kershaw can be seen with a PPG Wave 2.2, though it's not mentioned in the article included. It was used for the main riff in "Wouldn't It Be Good", alongside the Yamaha DX7.

As per this article, Dave Greenfield mentions owning a PPG Wave 2.2 synth. It replaced the Hammond organ and piano.

"No... I like [Hammonds] — but on the road it's a hassle for the crew, they take a lot of room up on stage, and they have a tendency to let you down. With the [PPG] Wave, I can get a pretty close sound to the two I used to use on the Hammond — a very percussive, sharp sort of sound, and quite a good Leslie effect... though I never had a Leslie to begin with... Obviously it's not possible to speed up or slow down the 'Leslie', but aside from that, it's remarkably close."

You can see the Wave 2.2 beneath the Elka Synthex.

At 1:15, a PPG Wave 2.2 can be seen in Martin's studio.

From 1985 Sound on Sound interview, which describe his studio (Havoc House).

Alongside the walls are purpose made tables supporting the array of synthesizers: a PPG Wave 2 and a Wave 2.2 complete with the Waveterm computer, a DX7, a Linn LM2, an Emulator and some elderly keyboard instruments of indeterminate vintage. The synths are connected to the main desk patchfield via a sub-field dedicated to ancillaries. MIDI wiring is strung around as the production requires it.

Seen in a picture of Thomas Heckmann's studio

Chris Cross used a PPG Wave 2.2 on stage with Ultravox, according to the January 1985 issue of International Musician.

In a video from "Friday Nights with Europe," Gunnar Mathias Michaeli confirms that the synth used for the pad sounds in "The Final Countdown" was a PPG Wave 2.2. However, during live performances, these pad sounds were played using a Roland JX8P, which is likely the same synth used to record the fanfare riff for the song. This information was shared in response to a fan question on the YouTube channel Europe Fan Media Corner on December 17, 2021.

In the image provided in the provided link, Stuart Neale is pictured using both the Roland Jupiter-8 Synthesizer as well as the PPG Wave 2.2.

video of Firechild performing on the PPG Wave 2.2 in his studio

In this interview, Patrick O’Hearn mentions the PPG Wave 2.2 as being among the synthesizers he uses.

"I've been working on David Attenborough's documentary 'The Living Planet' and if you listen to the programme it's done almost entirely on a PPG Wave 2.2 with a Waveterm computer, a Roland 100 modular system and a rack-mounted vocoder."