I think these are quite good:
Analog Obsession:
- Inspired by Filtek Mk3: FILTEQ – 3 parametric bands with low and high pass: http://analogobsession.com/product/filteq/
- Vintage Solid State LC High/Lowpass Filter: LCF – http://analogobsession.com/product/lcf/
- Classic Fet Compressor/Limiter: FETISH – http://analogobsession.com/product/fetish/
SoundSpot:
- Simple CPU friendly cutoff filter with resonance: FAT Filter - https://www.soundspot.audio/downloads/fat-filter-free/