MFSOP6-4 pitch 1.27mm are misleading
A variety of Toshiba isolators and SSRs are using the "MFSOP6-4_4.4x3.6mm_P1.27mm" footprint, and while this is the formal name of the package according to https://toshiba.semicon-storage.com/ap-en/design-support/package/detail.4pin%20MFSOP6.html it's unhelpful and misleading to refer to this as a "SOP6" package, and especially not a 1.27mm pitch part. There's precedent in library for doing this.
I propose that it should be renamed to "MFSOP-4_4.3x3.6mm_P2.54mm" and the symbols that explicitly reference it updated. An alternative would be to simply drop the footprint entirely. The existing "SO-4_4.3mmx3.6mm_P2.54mm" footprint is for the same fab size, also has an existing 3d model, and is simply more conservative on footprint dimensions. The obvious problem is that the toshiba docs that reference this footprint use the 1/3/4/6 pin numbering, rather than 1/2/3/4 as they do on newer documents :|
The related MFSOP6-5_4.4x3.6mm_P1.27mm could be kept as P1.27mm, as it does have that pitch, though I think the name should be changed to MFSOP-5.