I created an entity gallery and went through every point entity, finding issues with them and ones that needed iconsprites. This is what I found. Entities marked in bold already have an icon which isn't being used (usually from ficool2's set).
This currently only includes Portal 2 and TF2 entities, there are likely many more in other games. This also does not include engine entities (since you wouldn't be placing them in Hammer).
Entities without icon sprites (appearing as a colored cube):
[x] comp_kv_setter
[x] comp_pack
[x] comp_pack_rename
[x] comp_pack_replace_soundscript
[x] comp_precache_sound
[x] comp_precache_model
[x] info_intermission
[x] ai_npc_eventresponsesystem
[x] ai_speechfilter
[x] env_funnel
[ ] env_flare
[ ] env_lightrail_endpoint
[ ] env_player_viewfinder
[x] env_portal_credits
[x] env_rotorwash_emitter
[x] info_target_instructor_hint
[x] logic_achievement
[x] player_loadsaved
[x] point_posecontroller
[x] point_gamestats_counter
[ ] point_flesh_effect_target
[ ] point_survey
[ ] portalmp_gamerules
[ ] projected_wall_entity
[x] skybox_swapper
[ ] vehicle_viewcontroller
[ ] tf_halloween_gift_spawn_location
[ ] pd_dispenser
[ ] rd_robot_dispenser
[ ] target_changegravity
[ ] tf_teleport_location
[ ] tf_template_stun_drone
[ ] vote_controller
[ ] phys_torque
[ ] phys_thruster
Entities with a generic model, which an iconsprite should be added on top of (model in parentheses):
[ ] info_overlay_transition (overlay helper)
[ ] beam_spotlight (cone helper)
[x] env_citadel_energy_core (cone helper)
[x] env_projectedtexture (cone helper)
[ ] env_tilt (axis helper)
[ ] info_particle_system (cone helper)
[x] info_projecteddecal (axis helper)
[x] infodecal (axis helper)
[x] point_futbol_shooter (angle helper)
[ ] point_spotlight (cone helper)
[ ] point_viewcontrol_multiplayer (camera)
[ ] point_viewproxy (camera)
[ ] prop_glass_futbol_socket (angle helper)
[ ] hot_potato_catcher (angle helper)
[ ] hot_potato_socket (angle helper)
[x] keyframe_rope (axis helper)
[x] move_rope (axis helper)
[ ] phys_constraint (axis helper)
[ ] phys_lengthconstraint (axis helper)
[ ] phys_pulleyconstraint (axis helper)
[ ] phys_ragdollconstraint (axis helper)
[ ] phys_slideconstraint (axis helper)
[ ] propper_particles (cone helper)
[x] item_dynamic_resupply (health kit - remove the model, since it doesn't actually represent that item all the time)
[ ] tf_point_weapon_mimic
Entities using other icon sprites (current sprite in parentheses):
I created an entity gallery and went through every point entity, finding issues with them and ones that needed iconsprites. This is what I found. Entities marked in bold already have an icon which isn't being used (usually from ficool2's set).
This currently only includes Portal 2 and TF2 entities, there are likely many more in other games. This also does not include
engine
entities (since you wouldn't be placing them in Hammer).Entities without icon sprites (appearing as a colored cube):
Entities with a generic model, which an iconsprite should be added on top of (model in parentheses):
Entities using other icon sprites (current sprite in parentheses):