On LogBook Pro you can set up custom columns beyond the standard ones.
Set one column up as 'PIC-61' or what ever. That way you can 'break out' Part 61 PIC time if an employer wants/accepts it.
I lost a job because I strictly interpreted Part 1 vs. 61 PIC time and came up 100 hours short of PIC time. The strong impression I got was that they would have accepted Part 61.51 (e) (1) (i) time as a means to meet insurance requirements. They knew I had the knowledge experience but were bound by insurance mins too. At the time I didn't agree with it or feel comfortable with that interpretation, now I realize the difference between the two. Is it right? I don't know, but I keep Part 61 now if it's legal. I just keep it in a way that I can break it out if necessary and add it to the Part 1 PIC. I can explain the differences of Part 1 & 61 in an interview and allow the interviewer to make up their mind and let the pieces fall as they may.
I know when I was 'signed' for an Aircraft and when I was the 'sole manipulator'.
Part 135 vs Part 91 legs is another issue also. I personally don't see why someone on a part 91 leg in a Caravan can't log it if they meet the requirements. A company can be more selective but 'sole manipulator' is just what it is.
What am I missing?