Stoneforge Masterwork 
Artifact — Equipment
$3.50 #5080 0.36 10.6 years
Equipped creature gets +1/+1 for each other creature you control that shares a creature type with it.
Equip 
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Cards similar to Stoneforge Masterwork expected a card that isn't here?
Reports become test cases the matcher is graded against before an update ships. Delvefall isn't a chatbot guessing, it compares the printed rules text of every card with plain math, and examples like yours decide which differences should count.
Alpha Status92%
$5.12↑#8700↓0.25↓23.3 years↑
"Enchanted creature gets +2/+2 for each other creature on the battlefield that shares a creature type with it."
Coat of Arms77%
$10.41↑#942↑0.87↑28.2 years↑
"Each creature gets +1/+1 for each other creature on the battlefield that shares at least one creature type with it."
Konda's Banner76%
$12.17↑#11037↓0.11↓21.9 years↑
"Creatures that share a creature type with equipped creature get +1/+1."
+1 more matching line
Kemba's Banner76%
$0.36↓#10071↓0.25↓3.6 years↓
"Equipped creature gets +1/+1 for each creature you control."
Shared Animosity74%
$3.79↑#679↑0.4118.6 years↑
"Whenever a creature you control attacks, it gets +1/+0 until end of turn for each other attacking creature that shares a creature type with it."
Heirloom Blade72%
$0.24↓#3824↑0.08↓9.0 years↓
"Equipped creature gets +3/+1."
+1 more matching line
Skemfar Shadowsage70%
$0.28↓#45360.16↓5.6 years↓
"• You gain X life, where X is the greatest number of creatures you control that have a creature type in common."
White Lotus Tile70%
$5.45↑#4040↑0.00↓0.8 years↓
"
: Add X mana of any one color, where X is the greatest number of creatures you control that have a creature type in common."
: Add X mana of any one color, where X is the greatest number of creatures you control that have a creature type in common."