Ravencoin
XLM
ICX
ZIL
STEEM
Enigma
Polymath
Ox
Civic or TKY
HPB
MAN
REN
TOMO...
These are just some of the projects, I think are very solid under $1
XLM
ICX
ZIL
Civic
I think 4 altcoin that have the best technology in their list. Also I also invest in ADA I rated it best in all altcoin under 1$