I use DMG Limitless and Equilibrium (Sontec curves and filtering) a whole lot. Essence for problem solving, and Expurgate Iāve used a lot as an expander.
I like their plugins when I want to leave things pristine, which is most of the time.
For reverbs and fx, I typically use Relab and Soundtoys PrimalTap or Eventide H910 and SP2016.
Valhalla vintageverb, plate and delay I like too, especially on synths.
Also Nimbus for transparent chambers.
For color, UAD. Especially their SSL v2 strip and bus comp, and 550A I like when I run out of or donāt have access to hardware.
TDR Kotelnikov is great for transparent compression.
Izotope for NR.
For instruments, u-he.