Re: To me ‘good’ and ‘blood’ are pretty straight rhymes
If you can't hear the difference (to US speakers) it'd probably be hard to find minimal pairs for examples. Think "uuuuuuuuhhhhhh..." as spoken by Butt-Head (blood) compared to "woof! woof!" as spoken by a dog (good).
Rhymes can be funny. To many people "broadcast" and "podcast" rhyme -- don't know if I could find the words to write the difference.