TO help you out with this hack, I got Pok?mon teams for the Orange Island Gym Leaders! Not only that, but like in Emerald, I also got rematch teams for them as well! The Trainer sprites here were done by Duke R, who's hasn't been here for over a year. Also, I got sprite forms for each of their lineups as well! Anyway on with the teams!
LEADER CISSY
Gym Battle
L30 Seadra, L36 Blastoise
First Rematch
L42 Carvanha, L45 Seadra, L42 Spheal, L45 Blastoise
Second Rematch
L44 Wooper, L47 Carvanha, L47 Sealeo, L50 Seadra, L50 Blastoise
Third Rematch
L49 Quagsire, L52 Sealeo, L52 Sharpedo, L55 Kingdra, L55 Blastoise
Fourth Rematch
L54 Mantine, L54 Quagsire, L57 Walrein, L57 Sharpedo, L60 Kingdra, L60 Blastoise
LEADER DANNY
Gym Battle
L34 Geodude, L37 Graveler, L40 Nidoqueen
First Rematch
L43 Swinub, L42 Graveler, L40 Numel, L45 Nidoqueen
Second Rematch
L43 Baltoy, L47 Graveler, L45 Camerupt, L48 Piloswine, L50 Nidoqueen
Third Rematch
L52 Rhyhorn, L48 Claydol, L50 Camerupt, L52 Golem, L53 Piloswine, L55 Nidoqueen
Fourth Rematch
L53 Claydol, L55 Camerupt, L57 Golem, L57 Rhydon, L58 Piloswine, L60 Nidoqueen
LEADER RUDY
Gym Battle
L39 Exeggutor, L42 Starmie, L45 Electabuzz
First Rematch
L42 Electrike, L43 Exeggutor, L49 Starmie, L50 Electabuzz
Second Rematch
L50 Mareep, L48 Exeggutor, L47 Manectric, L54 Starmie, L55 Electabuzz
Third Rematch
L52 Chinchou, L55 Flaaffy, L53 Exeggutor, L52 Manectric, L59 Starmie, L60 Electabuzz
Fourth Rematch
L57 Manectric, L58 Exeggutor, L60 Ampharos, L62 Lanturn, L64 Starmie, L65 Electabuzz
LEADER LUANA
Gym Battle
L45 Marowak, L45 Alakazam
First Rematch
L47 Meditite, L45 Natu, L50 Marowak, L50 Alakazam
Second Rematch
L50 Natu, L52 Medicham, L55 Marowak, L55 Alakazam
Third Rematch
L55 Natu, L51 Mr. Mime, L53 Jynx, L57 Medicham, L60 Marowak, L60 Alakazam
Fourth Rematch
L56 Mr. Mime, L58 Jynx, L60 Xatu, L62 Medicham, L65 Marowak, L65 Alakazam
LEADER
Gym Battle
L30
, L36
First Rematch
L42
, L45
, L42
, L45
Second Rematch
L44
, L47
, L47
, L50
, L50
Third Rematch
L49
, L52
, L52
, L55
, L55
Fourth Rematch
L54
, L54
, L57
, L57
, L60
, L60
LEADER
Gym Battle
L34
, L37
, L40
First Rematch
L43
, L42
, L40
, L45
Second Rematch
L43
, L47
, L45
, L48
, L50
Third Rematch
L52
, L48
, L50
, L52
, L53
, L55
Fourth Rematch
L53
, L55
, L57
, L57
, L58
, L60
LEADER
Gym Battle
L39
, L42
, L45
First Rematch
L42
, L43
, L49
, L50
Second Rematch
L50
, L48
, L47
, L54
, L55
Third Rematch
L52
, L55
, L53
, L52
, L59
, L60
Fourth Rematch
L57
, L58
, L60
, L62
, L64
, L65
LEADER
Gym Battle
L45
, L45
First Rematch
L47
, L45
, L50
, L50
Second Rematch
L50
, L52
, L55
, L55
Third Rematch
L55
, L51
, L53
, L57
, L60
, L60
Fourth Rematch
L56
, L58
, L60
, L62
, L65
, L65