Most of these accounts write posts in the same thread. Almost all Jr.member accounts with 1 Merit, which was received from several users. This can be tracked at https://bpip.org/

In the table, I marked in green and set "+" if a post was made from that account in the thread that is written above.

All this activity has been over the past few months. Many accounts were created at about the same time.

Accounts:
Commadante2 - https://bitcointalk.org/index.php?action=profile;u=2304141
Elsop   - https://bitcointalk.org/index.php?action=profile;u=2304172
futterlod - https://bitcointalk.org/index.php?action=profile;u=2106942
XEFUZ - https://bitcointalk.org/index.php?action=profile;u=1113476
Cryptoenthusbusa - https://bitcointalk.org/index.php?action=profile;u=2536574
Burgerwich - https://bitcointalk.org/index.php?action=profile;u=2304221

Threads:
Goldario - https://bitcointalk.org/index.php?topic=5234514.msg54072443#msg54072443
Sensitrust - https://bitcointalk.org/index.php?topic=5235440.msg54096044#msg54096044
HyperDao - https://bitcointalk.org/index.php?topic=5179405.msg52285674#msg52285674
FSM - https://bitcointalk.org/index.php?topic=5228432.msg53911678#msg53911678
CryptoParadise - https://bitcointalk.org/index.php?topic=5217018.msg53588215#msg53588215
Loltoken - https://bitcointalk.org/index.php?topic=5134930.msg50728278#msg50728278
Qredit - https://bitcointalk.org/index.php?topic=5030061.msg45784856#msg45784856
Titan - https://bitcointalk.org/index.php?topic=5127407.msg50430502#msg50430502