SonarQube Severity Categories

I can see some vulnerabilities and hotspots marked as C and E on the dashboard. However, when I check the issue details, they show medium-priority or Informational risks.

Looking at the SonarQube matrix, it categorizes security bugs as follows:

Security Rating (security_rating )
A = 0 Vulnerabilities
B = at least 1 Minor Vulnerability
C = at least 1 Major Vulnerability
D = at least 1 Critical Vulnerability
E = at least 1 Blocker Vulnerability

Should I consider E as a blocker or a critical vulnerability?

Could you help me understand how to categorize these correctly?