Marks 1 & 2 are likely BP or EP, used to designate electro-plating of a base metal. However, being set in separate punches with crude shapes, suggests they might have been intended to be used like pseudo marks which are often shifted around with others. BP could also suggest Benedict-Proctor of Canada, which was a subsidiary of Benedict M.M. who did employ a lion in some of their marks. But if so, we would expect this to have been already documented somewhere.
For mark 3, pretty sure it's a lion as bears don't trail long tails. That said, pseudomarks are a problem as they can be alterations of known marks or creations by subcontractors. The closest similar mark I could find was a single element (octagon w/lion) in a group of marks for Blankinton: https://www.sterlingflatwarefashions.co ... /SPB2.html
I would also point out that the firm of Arthur Krupp used a walking bear mark and also (1918-35 era) an octagonal cartouche around their name mark. It wouldn't be too hard for a competitor to steal the ideas and combine them using a lion to replace the bear. To blatantly borrow from Dickensian misquotations, "Ours is a competitive business".
As to pattern, their really is none. The shape is a fairly common base, and with no embellishment here so I would just revert to "plain point" as a description. If the original set came boxed, then someone might be listing a sample which could contain the actual maker or retailer information on the inside of the lid.