My journey through metal chronologically

Interesting, I didn't realize how much a lot of it is like Jimi Hendrix, since I never really sat down with him, just hearing hits on the radio. That does make their inability to make it big back then, since I think they do have the sensibilities to be looked back fondly on by the same audience who usually listens to classic rock radio.

Black Sabbath - Paranoid
Paranoid is more what I expect out of a Black Sabbath album, but still finds ways to be odd in retrospect. The sort of thing that reminds you that this is still really before metal is metal as we know it. We might owe heaviness to Sabbath, but in many ways it just isn't what we expect of metal.
Take War Pigs. There's nothing weird about War Pigs, right? Wrong. No one outside of a progressive or technical band would make anything like War Pigs. Metal bands don't devote sections of their song to short guitar riffs followed by drum fills. The more loose song structure here is far more alien to the average metal song, than say, a comparable hard rock song from a non-metal band.
In this sense, the hero of the album is Bill Ward. He might as well be called Peter, for he is the rock the rest of the band is built around. There might be better technical drummers, but in this moment, there is no drummer more precise than him. No drummer more perfect than him. Without him, songs like Paranoid or Iron Man would still be as heavy, but without him, they would lose that feeling of tightness that they enthralled the world with.
On an album full of hits, I feel like the real best song on the album is Electric Funeral. Keeping the doom metal spirit alive through sound rather than vibes. Takes a lot of skill to make a song with effectively one riff work for 5 minutes. Oh, sure, it has variations, but it's one riff. I guess there's a solo, but it has to be the simplest solo ever made.
Paranoid still remains within the confines of this weird heavy rock that retroactively became heavy metal. I think if anyone else did what this album did you'd see a progressive tag for sure. Which isn't a mark against it, just an observation about how it remains beloved in and out of the metal community.

9/10

Good call regarding Bill Ward, Morpheus. I don't think he gets anything like enough credit. He was heavily influenced by jazz drummers I believe, which I think you can often hear in his playing style and classic Sabbath wouldn't be the same without him.

Sir Lord Baltimore - S/T
If nothing else, Sir Lord Baltimore is not content to sit on their laurels since Kingdom Come. A lot of bands, in so short a time, would release something similar to the last album, but this is not the self-titled, no sir, this is something different. At least for them, in general this sounds more like a typical rock album of the time.
To start with there's the epic Man from Manhattan. It's not bad, but it isn't that interesting either. It strikes me as unfocused, and in some places like a poor copy of Thin Lizzy. (Yes, I know this was before Thin Lizzy, it still sounds like a copy) It's an odd choice to start the album off on.
I have to wonder if Henry Conklin heard either of these albums at some point, because this is the first time I've heard someone like him before he started singing. Maybe this guy was always like that and I only noticed on this album because it's a stronger resemblance.
The album is a lot more approachable. There's still that crazy guitar, but it no longer drowns out everything else to the detriment of the song. Now it's more of one part, though this comes at the cost that some solos feel like there's only there because that's necessary. The non-10 minute tracks are all broadly good. I dig Chicago Lives for it's bizarre proto-Blaze Bayley Iron Maiden sound; Caesar LXXI for being a simplistic but effective predecessor to epic metal.
It's a shame that the band dropped off after this, because I think here they managed to start finding their groove. Alas, outside of a rerecording of old material three decades down the line, this is it for Sir Lord Baltimore.

7/10

What do you think of its metal claims then Morpheus? I label "Sir Lord Baltimore" as a hard rock record personally although closer "Caesar LXXI" is certainly a heavy metal tune.

I don't really think there's anything special about them in that sense. They primarily shift between psych and hard rock, and on this album, I think the hard rock wins out. On the whole there's the third album, but that one does not sound like it was recorded in the '70s, so I can't help but think of it somewhat negatively. Like that one Italian band who did the obvious modern recordings claiming to be some lost '70s metal band. (and IIRC, did have some actual '70s recordings, which didn't sound unusual in this regard)