Kerri Maclellan

In the video "Live on KEXP" at 23:58, you can see the words "Korg Poly Ensemble" on Kerri's rig.

There are 4 knobs to the left of the presets, which rules out the Korg PE - 1000 & 2000.

The Korg Poly Ensemble P matches the knob layout.

In this performance with Alvvays, Kerri MacLellan can be seen playing the keys with three pedals sitting on top of her Korg Poly-Ensemble P. The Boss TU-3S can clearly be seen at 0:53.

This video shows Kerri Maclellan performing with Alvvays at KEXP. At 17:58 there's a clear shot of her keyboard layout which appears to be the Novation 61SL MKII.

In this performance with Alvvays, Kerri MacLellan can be seen playing the keys with three pedals sitting on top of her Korg Poly-Ensemble P. At 25:23 into the video, we get a clear shot of the yellow text on her black pedal, revealing it to be a Dr. Scientist Reverberator.

In this performance with Alvvays, Kerri MacLellan can be seen playing the keys with three pedals sitting on top of her Korg Poly-Ensemble P. At 0:30 into the video, one can see a red pedal nested between a Boss TU3S and a Dr. Scientist Reverberator. The shot is not quite clear but it appears to be a Boss DM-2 Delay pedal.