Weather they are right or wrong I have no idea but then neither do you where you found your answers but I did the best I could in trying to inject some interest in a new game and would rather be given a stroke than a whack thankyou.
the answers I have are as follows. First few already there
Hawaii could be based on their word for homeland "OWHYHEE"
Idaho is an invented word
Illinois Algonquin indian for warriors
Indiana from Land of the Indians
Iowa beautiful land
Kansas Sioux "south wind people"
Kentucky Iroquois word Ken-tah-ten means Land of Tomorrow
Louisiana King Louis XIV
Maine assumed to be a reference to the state region being a mainland, different from its many surrounding islands
Maryland King charles 1 wife
Massachusets indian for 'a large hill place'
Michigan Chippewa word meicigama "Great Water"
Minnesota Dakota sioux indian word "sky tinted water"
Mississippi indian word mici zibi "great river"
Missouri after the local indian tribe
Montana spanish word means Mountain
Nebraska Oto Indian word means "flat Water" refers to platte River
Nevada spanish for snowy-clad
New hampshire after Hampshire England
New jersey after jersey England
New mexico after country Mexico
North Carolina after king Charles 1
North dakota for Sioux or Dacotah indians
Ohio Iroquois word "good river"
Oklahoma Choctaw means "red man"
Oregon 1715 map of Wisconsin river known as Ouaricon-sint
Pennsylvania after William Penn
Rhode Is after Roode Eylandt names by dutch because of red clay
South Carolina same as north
south Dakota same as north
Tenessee after Cherokee village called Tanasi
Texas spanish Tejas when it was mexican they changed the j for x as an english contribution