A. Simple pipelines are specified with XM
B. Complex pipelines are specified in JSO
C. Classic pipelines are specified graphically. Tekton pipelines are specified in YAM
D. Legacy pipelines are specified with CSV files. NextGen pipelines are specified in JSON
E. Tekton pipelines are specified in YAM
F. Codewind pipelines are specified in XMI
Explanation:
https://cloud.ibm.com/docs/ContinuousDelivery?topic=ContinuousDelivery-tekton-pipelines