What are the order of the gyms in pokemon Heart Gold?

Question

I know flying comes first, because I just beat it, but what comes after? TYPES

Answer 1

Second Gym- Azalea Town (Bug)
Third Gym- Goldenrod City (Normal)
Fourth Gym- Ecruteak City (Ghost)
Fifth Gym- Cianwood City (Fighting)
Sixth Gym- Olivine City (Steel)
Seventh Gym- Mahogany Town (Ice)
Eigth Gym- Blackthorn City (Dragon)

Comments

I meant the types.

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Edited.