What body type am i?

I'm 5ft 7.5 and i weigh about 130 pounds and i'm trying to gain weight. I've been going to the gym for three months and i want to see what diet and routine i can do for my body type
forearm 10in
wrist 7in
chest 39in
biceps 13 in
waist 31in
hip 31in
Update: in the internet it says i have 18% body fat
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