Two of the recently completed models are the timeless bolter-armed Tactical Marines. Although I don't really need many more Tactical Marines with bolters, especially now that we can take Primaris Intercessors, I wanted to diversify the Marks of armor in my Tactical Squads. One Tactical Marine is wearing a full suit of Mk VI power armor while the other has a Mk IV helmet. (I'm rather fond of the Mk IV helmet and was very happy to see that the Primaris Marines' Mk X armor has a very similar helmet.) The Marine with the Mk IV helmet also has an archaic outline-only Chapter logo from ForgeWorld's Ultramarine Legion transfer sheet.
Three additional Tactical Marines are armed with grav weaponry: one with a grav-cannon, one with a grav-gun, and a Sergeant with a combi-grav. Although grav weapons are still a decent upgrade option (and are a lot less situational since the new rules make them effective against lightly armored units like Ork Boyz), they're not quite the must-take weapons that they were in 7th Edition.
The grav-cannon Marine is also equipped with Mk VI armor. I made the small Tactical logo on both Corvus-armored Marines' shoulder pads by cutting down a full-sized transfer with a razor.
The final model is Chief Librarian Tigurius, whose pewter model I bought back when I started the hobby in 2011. I don't much care for the old pewter models, but the introduction of the Librarius Conclave in the last Space Marine codex convinced me to build a trio of Librarians led by Tigurius. Sadly, by the time I finished painting the model, the Librarius Conclave was obsolete. The other two Librarians (one with a jump pack and one in Terminator armor) are primed and sitting in my storage case. At this point, the only reason I'll ever finish them is because I'm a fan of GW's plastic Librarian models.
