I’m skipping FE4 (Genealogy of the Holy War) & 5 (Thracia 776) because the fan translations are incomplete and dodgy, so I’m waiting for the inevitable remake for those.
After FE5, the original creator of Fire Emblem left the company to make his own games, which were Fire Emblem in all but name. I’m playing them currently and will report if I have any thoughts. In the meantime, I have thoughts on the GBA games, where the series tried to reinvent itself after the creator’s departure.