Final answer:
John Lofland did not influence sociology during its early years, unlike foundational thinkers Karl Marx, Herbert Spencer, and Max Weber.
Step-by-step explanation:
The individual who did NOT influence the field of sociology during its early years, based on the provided list, is John Lofland. The founders of sociology, or the classical sociologists, include Karl Marx, Herbert Spencer, and Max Weber, who were pivotal figures in the development of sociological thought.
Karl Marx is well-known for his belief that societal changes occur due to class struggle, which is a core principle of conflict theory. Marx's ideas about social conflict leading to societal change remain influential in contemporary sociology. Herbert Spencer, on the other hand, is famous for introducing the concept of 'survival of the fittest' into sociological discourse and publishing the first book with the term 'sociology' in its title in 1873. Lastly, Max Weber is recognized for contributions such as the concept of the 'iron cage' and for his concerns regarding the effects of industrialization on society.
John Lofland is not recognized as an early influencer of sociology; hence, his work did not impact the discipline during its formative years as the others did.