I own *TBS Declan Pondi that’s mentioned above. If you are looking for strong jumper lines I’d look at what the stallion is doing, and I’d also look closely at his pedigree. Did his sire and dam perform at a high level of sport? Were they consistent? What about siblings (full and ‘half’)? It’s a disservice to these talented ponies that we don’t have the same classes that they do in Europe; pony courses with exceptionally tough little jockeys to ride them. Janet is fortunate the Canadians are now allowing Juniors to show stallions! 
You’ll see most of the ponies here competing in eventing. Declan’s sire, Dexter Leam Pondi, was one of the most prolific winners in the European pony Grand Prix’s in his heyday. He has sired too many Grade A ponies to count. Declan’s damsire, Ashfield Bobby Sparrow, has similar accolades, and also evented. He too has been a prominent sire of top jumping ponies.
*Grange Finn Sparrow’s line of direct purebred offspring has (very sadly) pretty much dwindled out, but if you wanted to breed to a Halfbred son, Sparrow’s Zeus, is standing at Starting Point Farm in GA. He is dilute black, so can give you color. The foal would be eligible for registration as a Connemara Sport Horse. ‘Grange’ left an incredible legacy with offspring that have competed at the upper levels in eventing, jumpers, hunters, dressage, and even driving.
The *Gunsmoke boys really have a lot of scope - I know you said you don’t plan to use Topgun again at the moment, but Foothill’s Field Marshall is really doing well out eventing and he’s very talented over fences in addition to being a good mover.
Lots of other good stallions mentioned above! Connemaras can jump, and I think you’d probably be happy with a foal by any of the aforementioned stallions. My main recommendation would be to study the individual, what they’re doing, and their family. Use a line that’s produced what you want consistently. Also examine their technique - range of motion in the shoulder, bascule, and power behind. Do they look tapped out over the fences? Flat? Or are they still climbing in the air when over the apex of the jump?
Good luck!
