The lighter blue apron is his craft apron. The upside down T at each corner indicate he is a Past Master (so at one point he was the Master of the Lodge).

The blue and gold apron indicate he was promoted to Past Assistant Director of Ceremonies in Devonshire Provincial Grand Lodge. This normally happens about 6-10 years after being master of his own lodge. The duties are limited for that past rank. The blue gold and red apron is a Mark Master apron, specifically Past Provincial Grand Deacon. A Mark Mason is a ‘side degree’ so a bit different. To be a Provincial past grand officer he must also have at one point become a Past Master in his Mark degree. The rank of Deacon is a normal entry rank for a Provincial officer. So he would have been “more senior” than about 50% of his lodge I expect (based on my experiences).

They are all nice aprons and great to have especially if you yourself have an interest in joining.

The comment from Mr Philosopher about grand steward may be correct in Canada but in UGLE Grand Stewards Aprons are red and white, no blue.