This is something I've found really interesting since I learned about it last year, and I've been trying to type the housemates since the beginning of the season. (I'm an INFP, by the way). However, after studying the theory for a while, I found that typing based on just the letters (I-E, N-S, etc.) often proves inaccurate. Instead, I type based on cognitive functions (which would take forever to explain, so I'm just going to post a link).
http://www.cognitiveprocesses.com/Cognitive-Functions/index.cfm
Anyway, here are my guesses for each housemate still in:
David: INTP - Very introspective and strategic, but not very aware of how he comes off to others (inferior Fe).
Leo: ENTJ - Ambitious, go-getter type (because of dominant Te).
Priya: INFJ - She doesn't really seem like a feeler per-se, but it's clear that she has a fantastic read on others and is great at getting them to feel a specific way (Ni+Fe).
Ryan: ISTP - Cool, calm, and collected (basically a stereotype of that type).
Skye: ESFP - Pretty tough between this and ENFP, but she seems more Se-dominant in that she's very "live in the moment."
Travis: ESTP - Se-dominant for sure, but I don't think he's a feeler.
I don't know enough about the intruders to truly type them yet, but I'd guess that Lina - INFJ, Penny - ESFP, Richard - INTP, and Tom - ESFP.