Hi,
I'm afraid I can't offer much help with reading those disk images with an Amiga 5.25" drive (though I do have one) - it'd need special software because PC HD drives run at 360 rpm instead of 300 rpm, and TI-99/4(A) disks are FM encoded, not MFM. As for CP/M - that's not a disk format, that's a filesystem.

CP/M machines can use any number of different floppy styles. I once wrote a CP/M disk image for my Triumph Adler Alphatronic PC , using a (Windows) PC, I had to try about 40 different formats!
What I
can say is that if you have a PCI slot spare, and have enough cash to buy a Catweasel and a PC 5.25" drive, you can read and write all those formats, but you'll possibly have difficulty using a native Amiga drive.