15 most useful words:

JO: a sweetheart
JEE: to turn towards the right
JUN: a North Korean coin
TAJ: a tall, cone hat
AJI: a type of chili pepper
HAJ: an Islamic pilgrimage
HAJI: one who undertakes an Islamic pilgrimage
JIAO: a Chinese monetary unit
JEU: a game or sport
JOE: coffee
JOW: to make a constant droning noise
RAJ: sovereignty
AJEE: to one side, also AGEE
JUDY: a woman
JEDI: one who shows skill or mastery

Useful J words:
EEJIT(S) EMOJI(S) EJIDO(S) BIJOU(S) GANJA(H)(S)
KANJI(S) KOPJE(S) NDUJA PUNJI(S) OBJET(S)
RAJA(H) FEIJOA(S) DJIN(N)(S) JINN(I)(S) AJIVA(S)
JUBA(S) JUBE(S) GOJI(S) (A)JUGA JANKY

AJAR AJEE DJIN DOJO FUJI GOJI HADJ HAJI HAJJ JAGG JAMB JAKE JANE JAPE JARL JATO JAUK JAUP JAVA JEAN JEED JEFE JEEP JETE JEEZ JEHU JELL JEON JEUX JIAO JIBB JIBE JIFF JILL JILT JIMP JINK JINN JIRD JISM JIVE JIVY JIZZ JOEY JOHN JOLE JOOK JOUK JOKY JOTA JOWL JUBA JUBE JUCO JUDO JUDY JUGA JUJU JUKE JUKU JUPE JURA KOJI MOJO PUJA RAJA SOJA SOJU

AJIVA AJUGA BHAJI BIJOU CAJON DJINN EEJIT EJIDO FJELD FJORD GADJE GADJO GANJA HADJI HAJJI HIJAB HIJRA JABOT JACAL JACKY JAGER JAGGY JAGRA JAKER JALAP JALOP JAMBE JAMMY JANNY JANTY JAPAN JAPED JAPER JAUKS JAUNT JAWAN JAZZY JEBEL JEEZE JEHAD JELLO JEMMY JENNY JERID JERRY JESSE JETON JETTY JEWED JIBBA JIBED JIBER JIFFY JIGGY JIHAD JIMMY JIMPY JINGO JINNI JIVED JIVER JIVEY JNANA JOCKO JOCKY JOIST JOKEY JOLTY JOMON JORAM JORUM JOTTY JOUAL JOULE JOWAR JOWED JOWLY JOYED JUDAS JUGAL JUGUM JULEP JUMAR JUMPY JUNCO JUNKY JUNTA JUNTO JUPON JURAL JURAT JUREL JUSTS JUTTY JUVIE KANJI KOPJE MUJIK OBJET POOJA PUJAH PUNJI QAJAQ RAJAH REJIG RIOJA SAJOU SHOJI SHOJO SLOJD THUJA UNJAM

Useful J bingos

ADJOINT FEIJOAS INJERAS JADEITE JOINDER JANITOR RESOJET TAJINES ENJOINER JACONET JAROSITE JALOUSIE JETLINER JOINTER JOINTURE JUNIORED TOLARJEV