I thought most after market or 3rd party controllers/levers were a universal fit. (Assuming it’s cable actuated). However there are some differences in feel and components. Imo, the bearing type controllers can be smoother when setup and adjusted properly. (Usually a barrel adjustment once the cable is fixed). Wolftooth and OneUp controllers come to mind.
I've got a 2x straight universal lever on my old pedal bike which is great and I'll get one of them on my cube when I get around to getting one in my battery on wheels
I fitted a Shimano XTR SL-MT800L I Spec EV mount; went onto the bottom of my right hand brake lever and worked a treat. Works well ergonomically and visually on the XT Levers fitted to my bike.
I'm using a Bikeyoke Triggy Lever. Good build quality (well CNC'd) and decent price. From an ergonomic and functional perspective, it works great on my Stereo Hybrid with Magura MT7 Brakes (2-finger lever) in combination with the LED-Remote. Now I'm using the Purion 200 instead of the LED-Remote. Also works great.
ReMote Magura for Magura brakes and some 2-bolt clamp SRAM brakes - Includes Magura hardware and large-diameter ball-bearing pivot with a sealed cartridge for smooth operation and unparalleled modulation. The dropper cable is attached at the lever and has an intgrated barrel adjuster to make...