Here's a better resolution one
You are just right with the identity of the ones you've mentioned.
As for the others: the guy between Pelham and Kemish, I thought he could be one of these three:
![william-clark.jpg william-clark.jpg](https://www.encyclopedia-titanica.org/community/data/attachments/40/40198-48fe15f4c4610992172d4337221a6cfa.jpg)
William Clark (40)
![Titanic-Nutbean-William.jpg Titanic-Nutbean-William.jpg](https://www.encyclopedia-titanica.org/community/data/attachments/40/40199-98cccc1fb9b6daf98a16f7108cebd027.jpg)
William Nutbean (30) -although he was 5' 9" tall, and our fellow doesn't really look that tall-
![thomas-albert-street-m.jpg thomas-albert-street-m.jpg](https://www.encyclopedia-titanica.org/community/data/attachments/40/40200-6debd5297d4133277a380fd6e8202c95.jpg)
Albert Street (25)
Regarding the first one, I haven't found a picture of any firemen that resembles him. From all those firemen and trimmers who don't have a picture online, considering age and any other available data I'd dare to guess he could be any of these:
George Combes (34), John Hagan (35), Frederick Harris (39), James McGann (29), John Moore (29), Charles Othen (36), John Pearce (33)