Selecting a record based off conditions CLOB
After surviving the ordeal of installing Oracle 12c on Devuan, I came up with this query using json_exists:
select
  t.id,
  t.data.miscData,
  t.data.miscData.miscType,
  t.data.confirmationNumber
  from json_documents t
  where json_exists(
          t.data,
          '$.miscData?(@.miscType==&quot;CORRECT_TYPE&quot;)'
        )
    and json_exists(
          t.data,
          '$?(@.confirmationNumber==&quot;123456789qwerty&quot;)'
        )

FYI:
CREATE TABLE json_documents (
  id    RAW(16) NOT NULL,
  data  CLOB,
  CONSTRAINT json_documents_pk PRIMARY KEY (id),
  CONSTRAINT json_documents_json CHECK (data IS JSON (STRICT))
)