With the raid releasing today, the last 4 Dormant SIVA Clusters were found - completing all 30/30 of them. Below is the timestamped video for each one, following the order of the missions to make it simple to pick up.
Link: https://www.youtube.com/watch?v=o-FkPknNlaE
King of the Mountain (First Story Mission)
00:00 - Dormant SIVA: Iron Lords 2.9
00:23 - Dormant SIVA: Fallen 3.0
The Walls Come Down (Second Story Mission)
01:06 - Dormant SIVA: Clovis Bray 1.9
01:47 - Dormant SIVA: Clovis Bray 1.3
02:27 - Dormant SIVA: Iron Lords 2.0
02:52 - Dormant SIVA: Iron Lords 2.2
03:45 - Dormant SIVA: Iron Lords 2.1
04:05 - Dormant SIVA: Clovis Bray 1.7
04:30 - Dormant SIVA: Iron Lords 2.5
Iron Temple / Felwinter Peak (Social Space)
04:53 - Dormant SIVA: Fallen 3.1
The Plaguelands (Third Story Mission)
07:36 - Dormant SIVA: Clovis Bray 1.4
08:05 - Dormant SIVA: Clovis Bray 1.5
08:31 - Dormant SIVA: Clovis Bray 1.8
Download Complete (Fourth Story Mission)
08:50 - Dormant SIVA: Fallen 3.2
The Iron Tomb (Fifth Story Mission)
09:13 - Dormant SIVA: Clovis Bray 1.2
10:05 - Dormant SIVA: Clovis Bray 1.1
10:28 - Dormant SIVA: Clovis Bray 1.0
11:15 - Dormant SIVA: Iron Lords 2.8
11:41 - Dormant SIVA: Iron Lords 2.6
12:17 - Dormant SIVA: Iron Lords 2.7
The Wretched Eye (Strike)
12:40 - Dormant SIVA: Clovis Bray 1.6
13:11 - Dormant SIVA: Fallen 3.3
14:00 - Dormant SIVA: Fallen 3.4
Sepiks Perfected (Strike)
14:46 - Dormant SIVA: Iron Lords 2.3
15:07 - Dormant SIVA: Iron Lords 2.4
15:28 - Dormant SIVA: Fallen 3.5
Wrath of the Machine (Raid)
15:39 - Dormant SIVA: Fallen 3.8
16:29 - Dormant SIVA: Fallen 3.9
17:07 - Dormant SIVA: Fallen 3.7
17:31 - Dormant SIVA: Fallen 3.6
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I just found the hidden 35 clusters after defeating xylar the timeless. Then I got the exotic quest that required me to kill Randall the vandal using a fallen skiff. It was totally worth it because I FINNALY got the Touch of Mythocasm harpoon launcher!!