This is one reason I find the discussion of withdrawal rates to be of little use. I see at different times, one pension kicking in, a second pension starting, one SS income starting, a second SS income starting, before we get to what MIGHT be a steady withdrawal rate. And even then, at some point expenses drop, and then one SS stops. When the first SS income stops, expenses will change again. Withdrawals (and withdrawal rates) will be all over the place during the retirement period.
If you run a FIDO RIP report, you can see the % WR varies significantly over time.