ReCore

There are a total of 40 Audio Logs available in ReCore. I would recommend going for these after finishing the game to some degree. All are available in free roam after completing the game. Natalie Bright's audio logs are yellow and primarily located inside of optional dungeons.

I've arranged all the collectibles in 1 video showing their locations based on the area and accessibility.
Julius Roldan 1 - 0:03
Violet (V1-OLT) 1 - 0:49
Thomas Adams 1 - 1:25
Natalie Bright 1 - 2:13
Julius Roldan 2 - 2:33
Thomas Adams 3 - 3:00
Natalie Bright 4 - 3:21
Natalie Bright 2 - 4:02
Violet (V1-OLT) 2 - 4:39
Violet (V1-OLT) 7 - 5:04
Thomas Adams 2 - 5:28
Natalie Bright 3 - 5:59
Violet (V1-OLT) 3 - 6:37
Julius Roldan 3 - 6:59
Violet (V1-OLT) 8 - 7:24
Violet (V1-OLT) 4 - 7:50
Thomas Adams 4 - 8:34
Julius Roldan 4 - 9:00
Julius Roldan 6 - 9:35
Julius Roldan 5 - 10:00
Thomas Adams 5 - 10:57
Violet (V1-OLT) 5 - 11:20
Violet (V1-OLT) 9 - 11:58
Violet (V1-OLT) 10 - 12:34
Thomas Adams 8 - 12:48
Thomas Adams 9 - 13:18
Violet (V1-OLT) 6 - 13:40
Thomas Adams 6 - 13:53
Julius Roldan 7 - 14:13
Thomas Adams 7 - 14:55
Julius Roldan 8 - 15:31
Julius Roldan 9 - 15:55
Thomas Adams 10 - 16:07
Julius Roldan 10 - 16:28
Natalie Bright 6 - 16:53
Natalie Bright 9 - 17:36
Natalie Bright 8 - 17:57
Natalie Bright 5 - 18:40
Natalie Bright 7 - 19:03
Natalie Bright 10 - 19:45

Grabbing all 40 audio logs will unlock the following achievements:

I found this guide much better since it was only Natalie's Log.

I should note that although the game may have had unique log numbers before the definitive update, they no longer do. Meaning, the log numbers go up as you collect them in order, no matter which one you pick up. So you kind of have to know which ones you have NOW.

the game now displays the location of logs on the map, so the logs in eden are easy to find. However, for those which are in the duengons, you must be in the dungeon to see the symbol.

These include:
Obsedian Run
Armory Flux