Some developmentalists suggest that two kinds of intelligence exist. what is the term for the accumulation of information, skills, and strategies that people have learned through experience and that they can apply in problem-solving situations?

it is called crystallized intelligence

Explanation:

Crystallized intelligence is the ability to use knowledge, skills and experience. It does not equate to memory, but it is based on accessing data from long-term memory. Crystallized intelligence is one's lifetime of intellectual attainment, as shown mostly through one's vocabulary and general knowledge. .