I use many plugins, but these are just a few I often go to:
For various instruments, I often go for the UAD 1 Pultec Pro, LA2A, 1176, Dreamverb and Waves L2
Sometimes Waves SSL for inputs.
For Bass UAD 1 LA2A and Waves Bass Rider
For guitar (after my Fractal AX8) Waves RComp
For Vocals Waves Vocal Rider, De-esser and L2.
For Kick Drum UAD 1 Pultec Pro
Depending on the Drum kit, I may use XBass too.
For Mastering I like the UAD 1 Pultec Pro, sometimes Frequency,
and always the Waves L2.