They make assertions

Usage examples of claimers.

Chancey had been trying to supplement his income by betting on the races, but he was no better at picking horses than at riding them -- he had a passion for claimers who were moving up in class, which any tout will tell you is a quick way to go broke -- and old Chancey, he was getting mighty desperate, and on this particular morning he stopped rubbing Malicious and put him in his stall, and then started trading low whispers with a gnarly little man who had just appeared in the shed row with no visitor's pass or anything, and after a couple of minutes they shook hands and the gnarly little man pricked Chancey's thumb with something sharp and then held it onto a piece of paper.

Indeed, how many founders of cities and nations, occupants of thrones, commanders of armies, wielders of scepters, discoverers and claimers of worlds, have not subscribed to a similar delusion.

They were both forerunners—outliers of their people, breakers of new ground, claimers of new worlds.