Welcome back to the forum.
I'm glad the diagnosis of your urethral lesion finally became clear.
Don't feel guilty or responsible for your sexual activity before the diagnosis was made. Condoms should be highly effective in preventing infection with HPV localized in the urethra; and in any case, you can be sure women like your partners have repeatedly been exposed to wart-causing HPV strains and this particular exposure probably made no difference in their risk.
To your specific questions:
1) Warts are rarely tested for HPV type; we don't recommend or do that in my STD clinic. The cancer-causing HPV types rarely cause warts; but even if you had a high risk (cancer causing) type, it would still make no difference in your partners' risk. Below is a link to a thread that provides a general discussion about HPV risks, cancers, etc.
http://www.medhelp.org/posts/STDs/HPV-Transmission/show/1522088
2) Unlike some STDs, genital warts and HPV do not significantly increase the risk of catching HIV.
Best wishes-- HHH, MD