In this video, Sister Bliss says at 0:30,

We used a JD-800 to create the riff [for Insomnia]...

From the Roland Blog: “It’s a really interesting synth,” says A Guy Called Gerald, aka UK producer Gerald Rydel Simpson (also an early 808 State member). “It was more a string specialist,” he recalls. He tells us he tapped the synth for pad textures, “dynamic” string sounds, and “the most realistic synth guitar.” Gerald also reveals it’s behind the gorgeous strings on “Anything.” We might even hear a few other JD sounds on the breakbeat classic. 28 Gun Bad Boy, AGCG’s jungle crossover and proto-rave album is packed with JD-800.

Equipment & Software used on 'SYNTHWAVES':THORSTEN QUAESCHNING: Software: Steinberg Cubase 8 &8.5Hardware: Manikin Schrittmacher Step-Sequencer x 2Manikin MemotronRoland Jupiter 8 synthesizerRoland JD800 synthesizerDave Smith Prophet 8 synthesizerARP Solina MK2 string synthesizerKorg Wavestation Ex synthesizerWaldorf Microwave synthesizerMoog Voyager monophonic synthesizerModular synthesizerRoland V Synth synthesizerKorg Z1 synthesiserKorg Prophecy synthesiserKorg M1 synthesizerClavia Nordwave synthesizerYamaha TG77 synthesizer moduleRoland System 1 synthesizerRoland JU06 synthesizer moduleKorg MS20 monophonic synthesizerRoland JP08 synthesizer moduleRoland TR-8 Rhythm Performer drum machineOberheim DMX drum machineRoland Promars synthesizerFender Starcaster guitarFender Telecaster guitarFender Stratocaster guitarScrewdriver on wood and contact microphones,Several boxes with contact microphonesA field recording of bees in Thorsten's garden, edited on Cubase and then treated with Melodyne & Halion - and finally used for the lead melody line on 'A Calm But Steady Flow'.(Software synthesizers): Spectrasonics Omnisphere synthesizer, Spectrasonics Keyscape

Youth professes an affection for analogue keyboards and a strong dislike of FM synthesis. "I don't like modern keyboards too much. I leave them to jingle writers. Those modern sounds are so associative of those advertising images that I prefer to stay well away from them. But of course they end up using your music anyway [laughs]." The only modern keyboard which has his approval is the Roland JD800, because of its "analogue versatility. It's hands-on, direct communication with the machine, rather than numerical, mathematical communication. You can change the sounds very quickly. One of the most important things with equipment is how much time they take to use and program." Hence the presence of keyboards like Alpha Juno 2, Juno 106, Oberheim OB-X (MIDI), SH101 + MCV, Korg MS1, Proteus, Proteus World, plus of course the JD800 in the main studio in the basement. There are also the well tested TR808 and 909, plus Akais S1000 and S1100.

In an Instagram video by rhythmd, it is mentioned that Eazy-E used the Roland JD-800 Synthesizer while creating "Real Muthaphuckkin G's."

In a studio tour video by MusicRadar Tech, Jody Wisternoff discusses his use of the Roland JD-800 Synthesizer at the 16:16 mark.

from the equipment list on his website

From the "Gratuitous Sax & Senseless Violins" era until the "Balls" era, Ron Mael can be seen using the Roland JD-800 Synthesizer during live concerts.

Roddy Bottum is confirmed to use a Roland JD-800 synthesizer, as stated in a September 1997 issue of Keyboard Magazine. In the article, it is mentioned, "Roddy uses a K2000, and he's got a [Roland] JD-800, and an [E-mu] Emax II. Lots of samples." This information is provided as part of an interview discussing the recording process for Faith No More.

"We get a lot of mileage out of the JD-800. We use it more like a drum synthesizer rather than just a sample source," says Graham. "Like, you can take a CR-78 snare which is very 'biscuit-tinny' and add a little bit of a metal sample to it, but only so that you can only 'sense' it, rather than hear it. It makes everything a lot harder."

He doesnt use it in this video, but it can be spotted at 0:08.

Phil Oakey is listed as using the Roland JD-800 Synthesizer, as noted in the kit list featured in an article on The-black-hit-of-space.