Lynnstrument is MPE compatible and this is from the Roger Lynn site:
LS Recommended Sounds
Hardware synthesizers compatible with MPE
Deckard's Dream
Endorphin.es: Shuttle Control USB MIDI to CV Converter
Expert Sleepers FH-1 (MIDI/USB to Control Voltage interface)
Kurzweil V.A.S.T. Synthesizers
Futuresonus: Parva
Roland JV-1080,
JV-80 (keyboard),
JD-800 (keyboard),
JD-990 (rack module),
XP-50
Vermona: PerFOURmer
Audiothingies: MicroMonsta
He mentions the following re MPE;
MPE-compatible sounds
This means that each voice receives from a separate MIDI channel, permitting polyphonic pitch bends and Y-axis control when LinnStrument's Channel Per Note (MPE) mode is used. These are listed under the "Mac/Win MPE", "iOS MPE" and "Hardware MPE" tabs below.
However, it is important to note that because of LinnStrument's smart one-channel MIDI handling and ability to send polyphonic pressure messages, the primary advantage of MPE is to perform polyphonic pitch bends and Y-axis gestures, which aren't so important in most playing styles.
Also, note that any multi-timbral synth (a synth that permits each incoming MIDI channel to act as an independent synth with a different sound) can act as an MPE controller. To do this, merely set all of its per-channel synths to the same sound. The disadvantage is that adjusting a synth parameter (filter frequency, for example) requires making the same adjustment on each of the per-channel synths.
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Roli has their own MPE compatible synth list here;
Compatible synths, DAWs and instruments : ROLI Support
Hardware synthesizers compatible with MPE
Audiothingies MicroMonsta
Axoloti
Deckard's Dream
Endorphin.es Shuttle Control
Expert Sleepers FH-1
RISE/GRAND
BLOCKS
Futuresonus Parva: RISE/GRAND
MOD Duo
Modal Electronics 001 / 002 / 002R
Modor NF-1 / NF-1m: RISE/GRAND
Polyend Poly
Snyderphonics MantaMate
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There’s also the (MPE compatible) Keith McMillen Instruments K-Board 4 Pro as a potential alternative to the Roli... the USB support is beneficial.
https://www.keithmcmillen.com/products/k-board-pro-4/
K-Board Pro 4 is a four-octave MIDI keyboard controller with multiple dimensions of touch sensitivity in each key. K-Board Pro 4 is MPE compatible, sending attack velocity, release velocity, continuous pressure, horizontal position, and vertical position data to offer the deepest level of expressive playing.
Under each key of K-Board Pro 4 is KMI’s patented Smart Sensor Fabric technology that is at the core of all our MIDI control surfaces. Resilient silicone keys and no moving parts ensure our trademark durability.
K-Board Pro 4 is USB powered and class compliant to ensure both portability and compatibility with MacOS, Windows, iOS, Android, as well as MIDI capable hardware.