Cone 05/06

Spectrum Opaque Gloss 748 Fire Engine Red (it's guaranteed!); 749 Christmas Red; 742 Dark Red; 743 Bright Red; 122 Apple Red 
Duncan Envision Translucents IN1004 Sunset Red, IN1005 Ruby Red, IN1009 Cherry Red 
Duncan Envision Opaques IN1073 Strawberry, IN1074 Cranberry
Duncan Opaque Gloss GL637 Christmas Red, GL614 Matador Red
Duncan Gallery Opaque GO134 Calypso Red, GO135 Candied Apple Red
Amaco Gloss LG53 Flame, LG56 Christmas Red
Amaco Matt LM56 Red
Amaco Old World Crackle CR53 Light Red
Amaco Deco Glosss Opaque DG53 Flame
Amaco Opalescent O52 Fuchsia
Amaco Crystaltex CTL50 Holiday
Amaco Majolica Gloss GDC53 Light Red, GDC54 Red

Cone 5/6

Amaco Sahara High Fire HF55 Coral Gloss, HF56 Red Gloss, HF58 Red Matt
Spectrum Mid-Fire Stoneware  1164 Dark Red, 1165 Bright Red, 1193 Fire Engine Red

Cone 10

Spectrum Hi-Fire  1270 Dark Red, 1271 Bright Red  

Underglaze

Duncan Red-Coat 201 Flaming Red, 204 Ripe Tomato, 207 Cherry Red (not non-toxic)
Amaco Sun-Strokes SS201 Tulip Red, SS202 Snap Dragon
Amaco Velvet V382 Red,  V383 Light Red
Duncan Cover-Coat  CC186 Tomato Red, CC187 Rustic Red
Duncan Concepts CN071 Light Scarlet, CN072 Bright Scarlet, CN073 Dark Scarlet

Raku

Spectrum Raku  858 Raku Red

Stains