All are just different software profiles for Galaxy Nexus.
- takju = yakju + google wallet.
- takju & yakju are both GSM/HSPA+
- takju & yakju are distributed by Google
- yakjuXX are distributed by Samsung
- ota updates for takju will work on yakju and vise versa
- ota updates for takju/yakju may or may not work properly for yakjuxx (radio mostly)
type: adb shell getprop ro.product.name
some more details:
- takju – USA region- and carrier-independent firmware released on models sold in the USA through the Google Play Store
- yakju – International region- and carrier-independent firmware released on models sold throughout western Europe.
- yakjudv – Variant for Australia
- yakjujp – Variant for the Middle East
- yakjukr – Variant for South Korea
- yakjusc – Variant for Japan
- yakjuux – Variant for Canada
- yakjuvs – Variant for Brazil
- yakjuxe – Variant for Russia and the former Eastern Bloc
- yakjuxw – Variant for certain carriers in Western Europe
- yakjuzs – Variant for China and Hong Kong
- mysid – Variant for Verizon in the USA
- mysidspr – Variant for Sprint in the USA