Raised by aunt and uncle. Boomers, I'm Y. They were Ontario conservatives. Aunt was a nurse but I guess okay with the cutbacks. Uncle was a teacher but I recall him being a 'scab' during a strike. However, I think their more public positions (and over time, needs) softened them to being more small c conservatives that may vote conservative locally, but not necessarily love conservative candidates beyond that. We lived in a rural area, though what was normal small-town-to-large-town for me, may have been farm-to-eventually-large-town for them.
Socially they seemed relatively lax. I don't recall them turning off anything that seemed liberal on the television, but I'd also see them scoff at it sometimes and especially if it was overtly political (parties). They probably are part of the crowd hating Wynne Liberal here, but I haven't heard them ever tout the Progressive Conservatives here either.
They were at least accepting on the face when I came out very early, but were probably primed by some signs like my demeanor (not quite 'fem' but unconcerned about ever acting so, no direct interest in girls), the 00s 'gay tolerance' wave, and some proof of my homosexuality like Internet history (woops). They are nice to and act interested in the status of my romantic partners, and would likely attend any wedding (at least as long as it isn't done in a way to embarrass them and their fake sensibilities) and that's good enough for me.
They've been big users of welfare (called Ontario Works by now.. thanks PCs) and hospital emergency rooms, so they see use for themselves and others to use funded public services, but they're just quick to slash that down to something they think is responsible.
Myself, I've voted NDP just about every time and I don't otherwise align with any party. In political compass tests I end up somewhat left, a little libertarian (that is, individual vs collective policy focus). I'm cynical about all parties, and even see a value in aspects of the right, but I'm happy to do movements to shake the system leftward. I'm one who generally supported Sanders from afar and advised people to vote Clinton in anything close to a swing state, but otherwise do what you want (abstain, other, green, whatever) - that isn't voting for the orange idiot.
Grandparents, I dunno. Somehow, I weirdly wonder (since there was a time they might have raised me instead) if they'd be more left than my parents (aunt and uncle). But my whole family probably comes from anti-communist reaction (Ukraine?, etc) so I don't think they'd go very left, just 'city life' left.