I think I did not convey myself properly. I said, all cards are similar in nature so far as their ease / difficulty in getting approved is concerned. The reason is the approval process in very much similar.
Since they are secured against cash deposit, only in exceptional cases, such as pending lawsuits, excessively damaged credit, etc, they are refused otherwise they are nearly guaranteed.
Issuer policies vary, but many issuers won't approve an application if the would-be borrower filed bankruptcy recently, has open collection accounts or current delinquencies. The applicant's history with the issuing bank also could prompt a rejection. If you've defaulted on a previous loan or credit card with the bank, it may not give you another chance.
Please refer the following link for some of the easier-to-get cards.
I am sure this would help. I wish you good luck.
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