Output characteristics curves do not merge in LTspice
You should use the DC sweep capability in Spice. Set up two sources, one a current (for the base recombination current) and the other a voltage (for \$V_\text{CE}\$.) As follows:



Once you have the above circuit in place, you can use the .DC card to perform the sweeps. Note that I first sweep \$V_\text{CE}\$ over some range I want and then I sweep the base current.

These sweeps can be linear, octave, decade, etc. You can create custom sweeps using the .STEP card and arranging to provide a list of values for some parameter, too. It's your call. Standard sweeps are convenient. But custom ones are achievable with a little more work. In the above .DC sweep I set up, I let Spice do the sweeps.

Here's the result. And you can see the Early Effect, quite easily: