Not sure if this counts, but without question the 1957 Les Paul Jr I have (with a ‘50’s p90 retrofitted in the neck) is the best sounding electric guitar I’ve tried period and I’ve played my share of ‘50’s LP’s (all of which were great and some in a similar league) including an actual ‘59. The 2nd best has probably been my friends ‘56 LP that was re-finished to a sunburst and retrofitted with PAF’s. It sent a real ‘59 he had packing. Another great one is my ‘69 Black Beauty Custom or this all maple ‘54 LP Jr I tried once (most old JR’s tend to be killer and underrated). Most of the late ‘60’s LP Custom’s sounded dead to me, but my ‘69 is one of the few guitars I’ve had that’s heavy, yet still has a resonance, tonal complexity and sweetness to its tone that I’ve only heard in lighter weight guitars while still also having some of that density/solidity to the tone found in heavier guitars, but it really admittedly isn’t as dense or punchy sounding as it should be given it weight, but man does the tone have sweetness to it
I’ve tried some really great re-issue LP custom shops (like R9, 8, 7, etc) that were cherry picked from literally over 70 guitars from guys I know, but as good as they were absolutely none of to me them had the tonal magic of the older ones I’ve played and at best sounded cute in comparison. With those older ones the notes connect in this very humane/organic way that I just haven’t found matched the same way and the warmth is just not there in the later ones. Those guys disagreed and felt they were as good as any ‘50’s one, but I just didn’t hear the tone being on the same level. To me the best sounding non-vintage LP type guitars I’ve tried so far are probably the McInturffs. I still actually play my McInturff Glory most often of all the guitars I have/had. With its Tone Specific Bloombuckers it sounds pretty close to my friend’s ‘56 LP (with PAF’s retrofitted) when AB’ed, but not gonna pretend like it really sounds the same, but depends on how discerning one is I guess. FWIW, my opinions on guitars are always all based just on quality of tone, not aesthetics, playability, etc. Really great sounding guitars are a rare find. The other qualities not nearly as much. Many modern day boutique makers can make a guitar that plays and looks great, but few that I’ve tried really have amazing tone imo, sadly because most just don’t seem to care enough about that (on a musical instrument not prioritizing tone!), but I digress