I would recommend playing the original versions of these games first, with a translation patch if necessary. But if you want to play them on a GBA specifically, then here’s a list. In some cases, multiple projects exist: I’ve listed all of them for completion’s sake, and in some cases to show what could have been or things that may be worth keeping an eye on.
FE1/11: Dark Dragon Reborn (complete), FE1 Faithful Remaster (complete), Archanea Reimagined (complete), FE1+2 (complete in theory, in Japanese), GFE1R (cancelled, though the buildfile is around).
FE2/15: Sacred Echoes (complete).
FE3/12: FE3GBA (cancelled, up to Ch5).
FE4: FE4 Advance (cancelled, not sure if it ever got a release), FE Forever (cancelled, covered ~Ch6 and 7?, download is broken and hack likely lost), Inheritors of the Crusade (WIP, up to FE4 Ch2), Jugdral Saga (no news in years, covered Ch6), Project Baldr (no public release yet).
FE5: FE5AD (WIP, at Ch14x).
FE9, FE10: FE9+FE10 (complete, in Chinese), Sacred Radiance (no news in years, up to FE9 Ch3).
FE16: Blue Lions Demake (main story present).
FE17: Engage Remake (no public release yet).
Berwick: The Lazberia Project (no public release yet).
BSFE: BSFE GBA (complete).