There's a Thread Summary between posts 1 and 2 of every thread. It's intended to supplement the OP, e.g. to show interest rate updates. It can be updated by the community, not just the OP. So that would be a logical place for those who want to [try to] maintain an accurate list to [try to] do this.
Agreed, Even those sources can be out of date at times. Trying to create/maintain an accurate list is an exercise in futility.There are better sources for interest rate comparisons such as High Interest Savings