Sentai writers per episodes: Gaoranger-Gekiranger: an experimental era

I call the series, between Gaoranger and Gekiranger the "experimental era", because during that era, the sentai franchise tried a lot of different kind of  sentai teams and concepts.

Hyakujuu Sentai Gaoranger

Junki Takegami (main writer): 1-18, 20, 22-23, 25, 27-28, 32-40, 44, 48-51 (38 eps)
Masanao Akahoshi : 19, 26, 29, 42-43 (5 eps)
Naoyuki Sakai : 21, 24, 30-31, 41, 46-47 (7 eps)
中洲千恵次郎 (sorry, dunno how it's spelled) : 45 (1 ep)

Ninpuu Sentai Hurricanger
Junichi Miyashita (main writer) : 1-4, 7-8, 11, 16-18, 23-24, 28, 31-32, 35, 39-40, 43-44,  49-51 (23 eps)
Naoyuki Sakai : 5-6, 10, 14, 20, 27, 41 (7 eps)
Atsushi Maekawa : 9, 13, 19, 26, 33-34, 42, 45-46 (9 eps)
Naruhisa Arakawa: 12, 15, 21-22, 25, 30, 36-37 (8 eps)
Shin Yoshida : 29, 38, 47-48 (4 eps)

Bakuryuu Sentai Abaranger

Naruhisa Arakawa (main writer) : 1-5, 7-8, 11-13, 18-19, 22-23, 25, 28, 30-32, 34-35, 37, 40, 46, 49-50 (26 eps)
Yoshio Urasawa: 6, 10, 17, 21, 29, 45 (6 eps)
Atsushi Maekawa : 9, 15-16, 26, 38-39, 44, 47 (8 eps)
Sho Aikawa : 14, 20, 24, 33, 36, 41-43, 48 (9 eps)
鈴木竹志 (sorry) : 27 (1 ep)

Tokusou Sentai Dekaranger

Naruhisa Arakawa (main writer) : 1-8, 11-14, 17-19, 22-23, 27, 30-31, 37, 39, 42-43, 46, 49-50 (27 eps)
Junki Takegami: 9-10, 15-16, 21, 24-25, 28-29, 34-35, 38, 41, 44, 47 (15 eps)
Michiko Yokote: 20, 26, 32-33, 36, 40, 45, 48 (8 eps)

Mahou Sentai Magiranger
Atsushi Maekawa (main writer) : 1-5, 9-10, 13, 16, 20, 28, 35-36, 41-42, 49 (16 eps)
Naruhisa Arakawa : 6-7, 14, 17-18, 22-24, 27, 31, 43-44 (12 eps)
Michiko Yokote : 8, 11-12, 15, 19, 21, 25-26, 29-30, 33-34, 39-40, 47-48 (16 eps)
Akatsuki Yamatoya : 32, 37-38, 45-46 (5 eps)

Go Go Sentai Boukenger

Sho Aikawa (main writer): 1-11, 17-20, 25-26, 29-30, 33, 47-49 (23 eps)
Yasuko Kobayashi : 12, 15-16, 23-24, 31-32, 35-36, 39-40 (11 eps)
Akatsuki Yamatoya : 13, 21-22, 27-28, 34, 41-42 (8 eps)
Naruhisa Arakawa : 14, 37-38, 45-46 (5 eps)
Junki Takegami : 43-44 (2 eps)

Juken Sentai Gekiranger

Michiko Yokote (main writer) : 1-6, 10-11, 15-16, 19-21, 24, 28, 32, 34-35, 37, 40, 44-45, 48-49 (24 eps)
Naruhisa Arakawa: 7-8, 23, 29-30, 33, 38, 41-42, 46-47 (11 eps)
Genki Yoshimura : 9, 13-14 (3 eps)
Sho Aikawa: 12, 17-18, 22, 25-26 (6 eps)
Kazuki Nakashima : 27 (1 ep)
Yuji Kobayashi : 31, 36, 39, 43 (4 eps)