Perhaps better to ask what people find useful!
Bench Planes:
LN Low Angle Jack - a 'go-to' for a lot of jobs*.
Record 05SS - less subtle than above*.
Record T5SS - shuting, very useful. Needs AI cutter*.
Record 04½, 05½* - when a bit of heft is needed
Record 03 - unused
Record 04SS - rarely used
Block Planes
LN 60½ - go to block plane*
Stanley 60½ - always around*
Record 0220 (2, 1 with AI cutter) - used occasionally
Several other Record block planes, but I can't remember where they are! - never used.
Specialist Planes
LN Edge Plane - used when frustrated...
LN #66 Beading Plane* - used a lot at the moment
Record 043 - often used*
Record 077A Bull Nose - useful occasionally*
Record 076 - never used, bought in error...
Record 078 - used when 043 not meaty enough
Record 080 Scraper (2) - never used, really.
Stanley #50 - rarely used. Some evidence of a second one, somewhere...
Record 071 Router - used a couple of times to prove a point.
Stanley #40 Scrub Plane - very occasional use
A couple of Stanley #39 skew rebates, never used.
Plus
A box of dismantled Millers Falls planes awaiting resurrection, several sad block planes in bits.
Plus
Another set of Stanleys (#3, #4, #4½, #5 plus block planes) in France.
Oh b*gger. Doing this has really worried me...
* = I would find it hard to live without.