Conventional Mortgage
The traditional mortgage has a constant interest rate that doesn't change for the life of the loan.   Your payment is split between principal and interest and remains the same every month.   Note that if you have escrow payments (for insurance and taxes) included in your monthly payment, there could be an annual adjustment in your total payment based on the balances of those accounts. 

FHA Loan (Federal Housing Administration)

An FHA mortgage is guaranteed by the government.  Anyone can apply for these FHA loans; however, they’re especially great for first-time homebuyers There are some limitations to loan size dependent upon the region in which the home is located.

VA loan

A VA loan is guaranteed by the Veterans Administration for eligible veterans, active duty personnel and in some cases, surviving spouses. It can be used more than once by a veteran; however, certain restrictions may apply.