New bulb too crowded to grow?

[greenpassion]

I have two of what I believe are oncidiums or something close to that that I put into S/H over a year ago. I have several questions here, and am willing to risk sounding REALLY naive. The first one I guess is : What other orchids other than Oncidiums have pseudo bulbs, and grow like them? And how would I know what these two are without ever having seem them flower? Actually one of them IS spiking now, and I do thinks it's an onc. but the other one, although it has bulbs, is tending to grow wide, sort of sprawled out, not as upright as the one spiking. I will try to send a pic of these guys-but actually this post was because the sprawled one is trying to put out new bulbs, but it's tight up to the edge of the pot, and there's no room. Oddly, the other side has more room, but this guy seems to want to put up new growths where there's no room. So, yesterday I took it out of the pot, cleaned off the primeagra, and put it in a new pot, centered, so that the new growths will have room. Any comments about this? And the one that is spiking is also really having a time of it pushing new growth up, that is against the edge of the pot. Is this normal? I have a Rfdra. Jerry 'Pacific Empire' (Is that an oncidium hybrid? It has pseudo bulbs) that not in S/H (yet) has spiked and flowered last year, and has 3 gorgeous new growths, but no new bulbs. I think I'm on too many topics here. Sorry.