Scot here - there's undoubtedly a Scots feel to the accent of Sharon Campbell-Rayment, but it's more like that of an originally non-native-English speaker who moved to Scotland and then lived there for >20 years. There's a couple of things I noticed in her first clip which might interest folks here:

1. the way she says "Scotteesh or Ireesh" in the first 2 seconds doesn't fit 100%. That way of pronouncing "-ish" as "-eesh" exists but for a more raw working class accent than what she has. So my dad is from Govan, a pretty working class area of Glasgow, and he'd say it like that. I grew up in Northeast Scotland and have an accent closer to hers and I wouldn't pronounce it this way.

2. The way she says "... we've since known that it is a ..." makes me think of a Northern Irish accent

3. Her "Inverness" has the emphasis backwards which is common in for Americans and Canadians when pronouncing Inver- and Aber- placenames. We would emphasise the second half - InverNESS, AberDEEN - whereas she's saying INVERness (or INverness). So she's picked up the general pronunciation, but some of the Canadian quirks are still present.

In any case it's super interesting!