Another way is to join Naruto - related forums or communities. There, you can ask for recommendations from other fans. They might be able to point you to some hidden gems that you wouldn't find easily through a simple search. Some people in these communities are really into Naruto react fanfiction and can give you detailed suggestions based on your preferences.
The other members of the Akatsuki would have mixed reactions. Some, like Itachi (if he were still alive in this fanfiction), might see Naruto as a glimmer of hope for the group to change its ways. He could work with Naruto to steer the Akatsuki towards a more positive path. But others, who are more set in their old ways, might resist Naruto's presence and try to undermine him. The villagers of the Leaf would be shocked and confused. They've always seen the Akatsuki as the enemy, and Naruto joining them would be a huge paradigm shift for them.
He probably resists. Naruto has always been a fighter. He would not just sit there and let them experiment on him without a fight. He might use his basic ninja skills like substitution jutsu to try and escape the experimenters.
He might be surprised. He's used to his own life and adventures, and seeing it twisted and turned in fanfiction could be unexpected.
If Naruto was an Ajin in a fanfiction, the characters in Naruto would have a mix of reactions. Hinata would be concerned for Naruto's well - being. She might be a bit scared at first because of his new and strange abilities, but still stand by him. The villagers, who have had a rocky relationship with Naruto in the past, might be afraid of him all over again. They could see his Ajin powers as a threat. On the other hand, Naruto's close friends like Shikamaru would try to understand what's going on and help Naruto control his powers if they can.
Naruto might be a bit shocked at first, seeing the usually tough Anko in a vulnerable, drunk state. He would probably try to help her, like getting her some water or finding a place for her to rest.
Initially, Naruto would be heartbroken. His friends and his village mean everything to him, and the thought that the gods, who are supposed to be just, have turned against him would be a huge blow. However, he wouldn't give up. He would use his determination and his unwavering belief in himself. He might start looking for allies among those who are also disillusioned with the gods or who believe in his innocence.
Naruto might initially be shocked and angry. He has always considered the Kyuubi as an enemy within him, and now being kidnapped by it is the worst - case scenario for him. He could try to fight back immediately, using whatever little chakra he can muster without relying on the Kyuubi's power.
Naruto might initially be very confused and hurt. He loves his father and the village, so being banished would be a huge shock to him.
Naruto would probably be defiant. He's not the type to just sit there and be a victim. He'd likely be shouting at his captors, telling them they made a big mistake.
At first, Naruto would be extremely hurt. He has always considered Team 7 as his family, so their betrayal would be a huge blow. He might go into a state of shock and disbelief.