Published fidelity checklists
The checklists available at this link include those published in Education and Treatment of Children from 2021 to 2023 as part of the research studies from that outlet.
Core Skills Fidelity Measures
The fidelity measurement systems available at this link include several core skills for behavior analysts, like setting goals, developing measurement systems, creating operational definitions, and identifying interventions. None of these measures have been validated, and many provide only broad categories that are likely to require further operationalization.
Common Procedures Fidelity Measures
The fidelity measurement systems and checklists available at this link cover several common procedures, like trial-based functional analysis, preference assessments, and discrete-trial teaching. None of these resources have been validated, and it would be important to individualize them to your situation.