FWIW A50 basically game-solved from the fundamentally flawed premise that SK was strongman (though frankly for game balance she should have been), based on a misunderstanding of how the doctor role works. And now that he's convinced SK was strongman, it becomes conceptually less likely it was Elyse, because she'd probably have just killed Rach (though no killing is hardly sub-optimal as a WIFOM play).
There's also the question of which of the three claims is most likely to be BS, which is slightly indicative on Elyse, but frankly A50's doc claim was never confirmed (and if he's BP, at that point it's not unreasonable to just roll with the claim and let the scum figure it out by him not dying at night), and Narna's claim is super easy to fake as well (one of the very few roles that is debatably negative value, since it can confuse town into thinking it's a BS role, even if it was accidental that it worked out that way [I'd figured that backup cop meant she'd get backup vanilla cop or neapolitan or whatever... full alignment cop was never something i considered acceptable in this setup barring multiple GF type roles, which didn't exist... Wake interpreted the setup as meaning that backup cop couldn't get anything without an alignment cop, and given the large amount of town power already on the board I consented] ).
PS One piece of evidence that no one has really considered is that Lapsa's final shot was super likely to be on A50, the doc claim. Throw in Lapsa's final day, and it's reasonably likely that his approach was to try and swing the lynch onto anyone other than the SK he shot, which would then create a potential 3P LYLO draw with the SK or maybe a weird final day where he just was able to figure out a way to lynch the SK at that point. Lapsa's enthusiasm for lynching Elyse was odd in a world where he knew she was the SK (he'd always be the F3 lynch if the SK was lynched first), but makes a LOT of sense in a world where he knew A50 was the SK. Of course what actually happened was that he blew the kill, but the people in the game don't know that.
SF1: you were asking the best questions to be out of the whole town, by far. ... every time ... you were pointing out legitimiately scummy behaviour. Like, every time. It was terrifying.
Shannon: Smith made it really hard for scum to get away with anything, I'm glad I wasn't scum against him.