At 0:58 into his studio tour, the TC Electronic Dynamic Digital Delay can be seen as Mark Ronson talks about the vintage analog gear he is able to use in the studio.

The website above refers to an article that presents some of the equipement used by Elton John on his magnificent live performances.

On second page, the 1st paragraph states that Elton John's equipment list contains TC Electronic 2290 Dynamic Digital Delay.

In 1991, hide used the TC Electronic 2290 Dynamic Digital Delay while recording X's second album, 'Jealousy,' as noted on his Wikipedia page.

Hamilton used this rack delay in the late 90's.

"I used those with a variety of rack effects like the Yamaha SPX 90, and TC Electronic 2290, and Eventide H3000 in a stereo set up. A little later I also used a Roland GP-8. Slightly off topic, my Dad liked the sound of many of my presets on the GP-8 so I went to Guitar Center and bought him one. I copied all of my presets into it and he used it extensively on his 1988 tour. The clean sound that you hear him soloing with is him playing his blonde Performance Guitar through the GP-8."

This can be seen as part of the rack-mountable equipment in the studio in this video.

According to Wimbish's site, he uses a 2290 "On the Floor" as opposed to in a rack.

It’s not that large a palette that I tend to draw upon. There are certain sounds that I love. I use a GigRig G2 at the front end normally when I’m writing and recording, and I’ve got a selection of stompboxes at the front end, like a Prince of Tone or King of Tone, Jester Overdrive, Analog Man Mini-Chorus, Keeley tremolo, and an Electro-Harmonix POG and Pitch Fork. I like to use analog on the front end. Then it comes into the Groove Tubes Trio with a TC 2290. Within the loop of the 2290 I have other things, like the Rotosphere and an AdrenaLinn pedal, and that goes into a Lexicon reverb. And then, in the loop of the Pitcher, there are Strymon delays and reverbs. Sometimes I run both independently, which gives me a very wide spread.

Also mentioned in the 2022 guitarguitar interview. Rothery mostly retired the unit, and is instead using Free the Tone Flight Time delay pedal.

Yeah, that was the setup all the way through to - and including parts of - the marillion.com album. Some of the effects have changed, like I used a (Roland) GP-16 for a while, but it was mainly a TC 2290 delay with a DS-1 and a Roland Chorus, into a quadraverb for all of the Marillion stuff up until about 1997-98.

Starting at 0:41 Mark King talks about the 2290 delay he has in his home studio, stating that it is "one of the benchmark delays".

According to an article on Guitarthai, in addition to his own signature ESP Eclipse lineup, Sugizo also used an ESP Horizon, Fender Jaguars, Fender Stratocasters, Fender Telecasters, Gibson ES175, a Gibson Les Paul Custom, a Richenbacker 330, and electric violins made by Kranz.

He also used Diezel VH4 head, a Mesa Boogie Dual Rectifier head, a Mesa Boogie 4x12 cabinet, a TC Electronic TC 2290 Rackmount Dynamic Digital Delay, Decimator ProRack G power conditioner, a script Phase 90, a Boss CE-2 Chorus pedal, a Boss OD-1 pedal, a Providence Final Booster, a Digitech Whammy II, an Eventide Pitchfactor, an Eventide TimeFactor, an Eventide ModFactor, a TC Electronic G System, a Boss PS-5 Super Shifter, a Blackstar HT-DIST Distortion pedal, and a Providence Stampede Overdrive.

Duane Denison used the Tc 2290 rack delay in Tomahawk. He also used the tc0144 board on his pedalboard to trigger the unit. Pic is from 2003. Note: the spkr cabinets and sunn rack amplifiers are NOT Duane’s. Those are Buzz Osbornes and they shared equipment for a number of shows, mostly in 2003

On Dominik's Facebook page, this picture shows his rack, which includes a TC Electronic 2290 Dynamic Digital Delay.