ServiceNow specialization advice ITOM/HRSD with ITSM

Hello guys, asking here for the experts guidance on choosing a ServiceNow Developer specialization path: Im very much confused about what combination do I need to expertise in my career path with integrations as a common in both

1. ITSM + HRSD
2. ITSM + ITOM I'm personally interested in scripting and complex logic handlings, rather than standard configurations we do usually in ServiceNow. Like drag and drop things I'm good at ITSM+ Integrations. Thanks in advance 😃