In case I did not explain my reasoning properly, I am not asking to explicitely separate Pratt and Beevers at all.
Taking all accounts either we have:
Delgado > burnt ALL remaining regenerations if any > Crispy Pratt > Crispy Beevers; whether Pratt is the burnt Delgado or a new but immediately burnt incarnation seems unclear in the text
or we have:
Delgado > (maybe a few others unknown ones) > pre-crispy Beevers > crispy Beevers > Crispy Pratt > Crispy Beevers
Without more material reconciling Susan shooting Delgado to death on Tersurus and McQueen shooting Beevers MUST possess some degree of speculation.
As of now, I argue that it is impossible to know 100%.
That's my reasoning to why I believe we should put both Pratt stories (Legacy and Assassin) in the "incarnation unclear" section.
This is not saying that Pratt is not Beevers but, much like we do with Tipple in the template, just admitting that we simply don't know.