What techniques are working well for you during your Customer Discovery Program's?

Hi all, I am kicking off a new customer discovery program with a set of our clients (in the B2B space) and was hoping to lean on the experience of any product people on ProductHunt. The plan at the moment is to conduct; 1:1 Interviews, Observations of current processes (via screen share), Concierge Testing and Story Mapping sessions. Would love to get your thoughts on any techniques/types of sessions that have worked really well for you lately, particularly now being remote? Any insights or info would be hugely helpful. Hope everyone is keeping safe and well.