Search the wallet but I can't seem to connect them with any other wallet. Aside from that, they all receive a small amount of bitcoin in each address. Maybe they are from exchanges or mixer.
Most probably the 2nd address that you have mentioned was from an exchange. All other addresses were not whales, the amount of bitcoin in those address is not that huge to impact the market.
Probably?Maybe? I believe both of you read some previous posts before you posting your comment and it is clear that the 2nd address is owned by Bitfinex.
Search the wallet but I can't seem to connect them with any other wallet.
Where did you search it? All other addresses except are connected to some other addresses. Seems that you did not search it anywhere. Please use walletexplorer and you'll find it. Finding connected addresses can be done on google like what you usually suggest to others.