Add feature flags internal usage staheolders to the blueprint

doc/architecture/blueprints/feature_flags_development/index.md

@@ -119,7 +119,9 @@ This work is being done as part of dedicated epic: [Improve internal usage of
 Feature Flags](https://gitlab.com/groups/gitlab-org/-/epics/3551). This epic
 describes a meta reasons for making these changes.
 
-## Who
+## [Who](#who)
+
+### Blueprint
 
 Proposal:
 
@@ -140,4 +142,24 @@ DRIs:
 | Leadership                   | Craig Gomes            |
 | Engineering                  | Kamil Trzciński        |
 
+### [Stakeholders](#stakeholders)
+
+| Role               | Person                | Title
+|--------------------|-----------------------|--------------------------------------------------------------------|
+| Executive Sponsor  | Christopher Lefelhocz | Senior Director of Development                                     |
+| Facilitator        | Darby Frey            | Senior Engineering Manager, Verify                                 |
+| DRI / Leadership   | Craig Gomes           | Backend Engineering Manager, Memory and Database                   |
+| DRI / Engineering  | Kamil Trzciński       | Distinguished Engineer, Ops and Enablement                         |
+| DRI / Product      | Kenny Johnston        | Senior Director of Product Management, Ops                         |
+| Functional Lead    | Ricky Wiens           | Backend Engineering Manager, Verify:Testing                        |
+| Functional Lead    | Anthony Sandoval      | Engineering Manager, Reliability                                   |
+| Functional Lead    | James Heimbuck        | Senior Product Manager, Verify:Testing                             |
+| Member             | Grzegorz Bizon        | Staff Backend Engineer, Verify                                     |
+| Member             | Michelle Gill         | Engineering Manager, Create:Source Code                            |
+| Member             | Wayne Haber           | Director of Engineering, Threat Management                         |
+| Member             | Doug Stull            | Senior Fullstack Engineer, Growth:Expansion                        |
+| Member             | Andrew Fontaine       | Senior Frontend Engineer, Release                                  |
+| Member             | Rémy Coutable         | Staff Backend Engineer, Engineering Productivity                   |
+| Member             | Marin Jankovski       | Senior Engineering Manager, Infrastructure, Delivery & Scalability |
+
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