I’m aware that some of them can spiral out of control when combined with specific other ones. I’m talking about ones you like to see in general. List here for your reference
https://starcraft2coop.com/resources/mutators#mutatorList
We Move Unseen - All enemy units are permanently cloaked.
Cloaking is typically only from those that can burrow and/or cloak (Wraiths, Banshees, Ghosts, Lurkers, DTs, from Arbiters, etc.). It’s nice to see them with any other unit comp really
Also changes up early game and build order, as you often have to rush detectors (esp. on RtK). Most notably, that early Ebay.
Midgame, it gives more prominence to towers (although I’m biased b/c I generally like making them). I make more cannons as Karax (or Obs if I got it randomly as Karax P2). And I never thought I’d make so many Missile Turrets as somebody like Raynor, or Primal Wurms as Dehaka.
Double Edged - Damage dealt by your units and structures is dealt back to them, but then healed back over time.
You get to brush off that list of units that have dps on the lower side and/or more tanky (e.g. Karax Sentinels and Mirages vs. Immortals), or are immune (various Top Bars, in one form or another)
Aggressive Deployment - Additional enemy units are periodically deployed onto the battlefield.
Force COs to deal with base defense more. This can be disruptive for some COs who can deal with them in waves (like Nova air strike, or Tyhcus medivac, Karax SoA lasers), but not when it’s perpetual (so towers and static are back in the picture)