I’m familiar with Stanford D.School’s “Design Process” and UK Design Council’s “Double Diamond”. Here’s a breakout of my workflow and deliverables may vary on project use case.

Empathize

  • User surveys
  • Competitive analysis / Feature matrix
  • Comparative UI Design
  • Content audit
  • Heuristic Evaluation
  • Card sorting
  • Contextual inquiry
  • Ethnographic Research
  • User interviews
  • Field studies

Define

  • Problem identification
  • Affinity mapping
  • Hypothesis statements
  • Assumptions mapping
  • Persona creation
  • Empathy map
  • How Might We’s (HMWs)

Ideate

  • Sketching (Crazy 8s aka Design Studio)
  • Wireframing
  • Task Flow
  • User flow
  • Site map
  • User journey mapping
  • Style guide
  • Design system

Prototype

  • Prototyping
  • Task scenarios
  • A/B testing
  • Usability testing

Test

  • Feedback loops
  • User observations
  • User interviews
  • A/B testing
  • Product analytics
Design Thinking Process (EDIPT)
Design Thinking Process (EDIPTI), which; you can learn more about the Design Thinking at https://designthinking.ideo.com
Revamped Double Diamond by Dan Nessler
A revamped version of the Double Diamond by Dan Nessler

I’ve also use the Framework for Innovation by UK Design Council mostly known by its design methodology as the Double Diamond. The gentleman named Dan Nessler gives a great breakdown of the revamped Double Diamond in his article.