ABC-3PO has been a long time favorite of my three and a half year old (I've got half of the poems memorized). I never saw OB-1 2 3 but I might have to keep an eye out for it.From about 3-4 years back, I found some Kohl's children's books: ABC-3PO (an alphabet book: check out Ackbar for the funniest one), OBI-1 2 3 (count up to 20), and 5-Minute SW Villain Stories (covers E I-EV II eras). Silly and funny, mostly.
I haven't seen the 5 Minute Villains book but we have two others from that series; 5 Minute Star Wars Stories (TPM-TFA) and 5 Minute Star Wars Stories Strike Back (TPM-TLJ). Generally, the stories retell a particular scene with movie dialogue where appropriate and minimizing the frightening stuff. On the whole, they're pretty good but some stories are definitely stronger than others.