Those look like Ontarios to me. They are probably the heaviest of the regular latin style machetes. The Tramontinas are the lightest I have used. The Collins, Cold Steels, Condors, and Imacasas are in between. In any blade over 18", I'll go with the Tramontina because I can swing it longer. But heck, I'm old. A younger man might prefer one of the heavier ones.
I thought they looked like Ontario's too, but as I said..there is a lot of copying of those things..Collins is as light as the Tramontina..at least the ones that I have used are..but then.. I haven't seen a Collins in years. The last closest were called Plymouths and looked suspiciously like Collins......Old Collins are the best...The new Tramontinas we have seen are really shoddy in construction...as far as machetes go... We are using Martindale... heavier than Collins, but better constructed than Tramontina. SOme of my guys like the wood handles, others, the plastic. Condors are all too short, Same with Cold Steel. At least, I have never seen one over 18"...
Doc