Groupset Recommendations?

How do people find the size difference between say riding a track bike vs geared road bike? I ride a track frame of about 55-56cm top tube length but ride on the top of the drops mainly......I have a road bike at the moment with top tube 55cm and slammed short stem and it still feels like im reaching when holding onto the shifters, definately feels like I need a shorter top tube, seat tube is fine when around 55-56cm tho. Is this common? I am around 5'10

Just break out the tape measure and compare. Track geo with steeper angles moves saddle forward and if you are riding on the flat portion of the bars the combo of saddle moving back a bit and reaching for the hoods will stretch you out.