Can you name different types of non-relational databases you have encountered?

Among the types of non-relational databases, the following can be distinguished:

• Document-oriented (e.g., MongoDB, CouchDB) — store data in JSON or BSON document format.
• Key-value (e.g., Redis, Riak) — a simple structure for fast access by key.
• Graph (e.g., Neo4j, JanusGraph) — optimized for storing and processing graphs and relationships.
• Column-oriented (e.g., Cassandra, HBase) — store data by columns, effective for analytics.

Each type is suitable for different tasks depending on the structure and requirements of the data.