John,
Welcome back to the sport. You've asked a hard question on such limited information. For starters, are you planning to shoot 3P or just prone? Next, do you want an all-Anschutz rifle, or would you consider mixing parts?
You mentioned being restricted to the 1907, is this because you specifically want a lighter barrel, say for 3P? Anschutz still make the heavier 1913 left handed; the action is exactly the same as the 1907, but the barrel is slightly longer and heavier. Interestingly Anschutz now list the 54.30 as available in left hand, where it wasn't at its debut a few years ago; the 54.30 is a development of the 1907 with a shorter bolt (and a few changes to the barrel breeching). I presume the new 22Max will be ambidextrous, at least the action, as it's not a rotary bolt.
For 19xx/54.30 barrel/actions, Anschutz now make just two stocks: the aluminium 1918 Precise, and wooden 1907. The 1918 has far more built-in ergonomic adjustment, ie it will likely fit you much better than the 1907, but is more expensive. Other firms make Match 54 compatible stocks if you want to mix 'n' match: Grunig & Elmiger, Keppeler, MEC, Tesro, Tec-Hro, Esprit Carabine, and System Gemini.
In terms of rearsights the Centra Spy is ambidextrous. The Centra 10-50 is technically handed, but practically can be turned around and an eyepiece screwed in from the other side.
However, a new rifle isn't the only option. Anschutz have made true left hand rifles since 1980. You may have to wait and search a bit, but an 1813L, like this
https://www.gunbroker.com/item/982484671, or a used 1913L would be a good deal cheaper than new.
Alternatively, a left field suggestion would be a Walther KK500: a true ambidextrous bolt (converts between LH and RH) and stock. The KK500 is starting to dominate ISSF matches.