With the regular VST/AU/AAX SSL channelstrip plugins that the UC1 was designed for originally, I have:
SSL 4K B
SSL 4K E
SSL Native Bus Compressor 2
SSL Native Channel Strip 2 (9000 J)
And the 'Link' plugins can host any other plugin as long as they're VST3.
SSL 360 Link plugin
Lets you map any plugin to the EQ and comp/gate sections of the UC1.
SSL 360 Link Bus Compressor plugin
Lets you map any plugin to the bus compressor section in the center of the UC1.
Although you could map any reverb, delay or harmonizer etc to it, I think it's best with ch.strips, EQs and compressors. Parameters find their natural place. The HP filter is always in the same place, the comp ratio is in the same place and so on.
Many channelstrips, EQs and comps fit well in the controller layout of the UC1, but some don't. Obviously a 32 band graphic EQ wouldn't fit, neither would a multiband compressor. And for instance, I haven't mapped my Distressor emulation to it because so many parameters don't fall into natural places on UC1.
So, channelstrips and EQs in 360 Link, I have:
80B EQ
Avalon VT-747SP
Backs EQ
Backs Pro EQ
BlackQv3
BRITSTRIP
BRITSTRIP MP
bx console Focusrite SC
bx console SSL 4000 E
bx console SSL 9000 J
COFFEEPUN
DV Brit73
DV Brit84
DV TubeBell
DV TubeFilter
DV TubeShelf
DV USRack
EMINENCE
Harrison 32Classic Channel Strip
Lindell 50 Channel
Lindell 80 Channel
Lindell PEX-500
Maag EQ2
Maag EQ4
MBSI
Model N Channel
Motone EQ
Need 73 Console EQ
Need 81 Console EQ
Need 84 Console EQ
Need 31102 Console EQ
P440 Sweet Spot
Pre TridA
Rule Tec EQ1A
Rule Tec EQ5M
True 252
UADx API Vision Channel Strip
UADx Helios Type 69 Preamp and EQ
UADx Pultec EQP-1A EQ
UADx Pultec HLF-3C EQ
UADx Pultec MEQ-5
And compressors in 360 Link Bus Comp, I have:
ADC1 Compressor
Arousor Lt
bx_opto
bx_townhouse Buss Compressor
GREY
Lindell 254E
MJUC
N4BRIGHTON2
NEOLD U2A
NEOLD U17
NEOLD V76U73
TDR Molotok
The Glue
UADx 1176 Rev A Compressor
UADx 1176AE Compressor
UADx 1176LN Rev E Compressor
UADx dbx 160 Compressor
UADx Fairchild 660 Compressor
VCA Compressor